feat: implement drive import functionality

src/main/MainApp.ts

@@ -47,15 +47,21 @@ export class MainApp {
 
     this.searchService.rebuildIndex();
     this.registerIpcHandlers();
-    this.createMenu();
+    await this.createMenu();
     this.createWindow();
   }
 
   /**
    * Creates the application menu.
    */
-  private createMenu(): void {
+  private async createMenu(): Promise<void> {
     const isMac = process.platform === 'darwin';
+    const drives = await this.listAvailableDrives();
+    
+    const driveSubmenu: Electron.MenuItemConstructorOptions[] = drives.map((drive) => ({
+      label: drive.label,
+      click: () => this.mainWindow?.webContents.send('import-from-drive', drive.path)
+    }));
 
     const template: Electron.MenuItemConstructorOptions[] = [
       ...(isMac ? [{
@@ -79,6 +85,16 @@ export class MainApp {
       {
         label: 'File',
         submenu: [
+          {
+            label: 'Import From Folder...',
+            accelerator: isMac ? 'Cmd+Shift+I' : 'Ctrl+Shift+I',
+            click: () => this.mainWindow?.webContents.send('import-from-folder')
+          },
+          {
+            label: 'Import From Drive',
+            submenu: driveSubmenu.length > 0 ? driveSubmenu : [{ label: 'No drives available', enabled: false }]
+          },
+          { type: 'separator' as const },
           {
             label: 'Rescan Library',
             accelerator: isMac ? 'Cmd+R' : 'Ctrl+R',
@@ -132,6 +148,8 @@ export class MainApp {
     ipcMain.removeHandler(IPC_CHANNELS.settingsGet);
     ipcMain.removeHandler(IPC_CHANNELS.settingsSetLibrary);
     ipcMain.removeHandler(IPC_CHANNELS.dialogSelectLibrary);
+    ipcMain.removeHandler(IPC_CHANNELS.dialogSelectImportFolder);
+    ipcMain.removeHandler(IPC_CHANNELS.systemListDrives);
     ipcMain.removeHandler(IPC_CHANNELS.libraryScan);
     ipcMain.removeHandler(IPC_CHANNELS.libraryList);
     ipcMain.removeHandler(IPC_CHANNELS.libraryRename);
@@ -143,6 +161,7 @@ export class MainApp {
   ipcMain.removeHandler(IPC_CHANNELS.libraryUpdateMetadata);
    ipcMain.removeHandler(IPC_CHANNELS.librarySplit);
     ipcMain.removeHandler(IPC_CHANNELS.libraryWaveformPreview);
+    ipcMain.removeHandler(IPC_CHANNELS.libraryImport);
     ipcMain.removeHandler(IPC_CHANNELS.tagsUpdate);
     ipcMain.removeHandler(IPC_CHANNELS.categoriesList);
     ipcMain.removeHandler(IPC_CHANNELS.searchQuery);
@@ -223,6 +242,17 @@ export class MainApp {
       return result.canceled ? null : result.filePaths[0] ?? null;
     });
 
+    ipcMain.handle(IPC_CHANNELS.dialogSelectImportFolder, async () => {
+      const options: Electron.OpenDialogOptions = { properties: ['openDirectory'] };
+      const targetWindow = this.mainWindow;
+      const result = targetWindow
+        ? await dialog.showOpenDialog(targetWindow, options)
+        : await dialog.showOpenDialog(options);
+      return result.canceled ? null : result.filePaths[0] ?? null;
+    });
+
+    ipcMain.handle(IPC_CHANNELS.systemListDrives, async () => this.listAvailableDrives());
+
     ipcMain.handle(IPC_CHANNELS.libraryScan, async () => this.requireLibrary().scanLibrary());
     ipcMain.handle(IPC_CHANNELS.libraryList, async () => this.requireLibrary().listFiles());
     ipcMain.handle(IPC_CHANNELS.libraryGetById, async (_event: IpcMainInvokeEvent, fileId: number) =>
@@ -306,6 +336,19 @@ export class MainApp {
       ) =>
         this.requireLibrary().updateFileMetadata(fileId, metadata)
     );
+
+    ipcMain.handle(IPC_CHANNELS.libraryImport, async (_event: IpcMainInvokeEvent, payload: unknown) => {
+      if (!Array.isArray(payload)) {
+        throw new Error('Import request must provide an array of source paths.');
+      }
+      const sources = payload
+        .map((entry) => (typeof entry === 'string' ? entry.trim() : ''))
+        .filter((entry) => entry.length > 0);
+      if (sources.length === 0) {
+        return { imported: [], skipped: [], failed: [] };
+      }
+      return this.requireLibrary().importExternalSources(sources);
+    });
   }
 
   /**
@@ -360,6 +403,86 @@ export class MainApp {
     return app.getAppPath();
   }
 
+  private async listAvailableDrives(): Promise<Array<{ path: string; label: string }>> {
+    if (process.platform === 'win32') {
+      try {
+        const { exec } = await import('node:child_process');
+        const { promisify } = await import('node:util');
+        const execAsync = promisify(exec);
+        
+        // Query Windows Management Instrumentation for drive info
+        const { stdout } = await execAsync('wmic logicaldisk get deviceid,drivetype', { 
+          timeout: 5000,
+          windowsHide: true 
+        });
+        
+        const lines = stdout.trim().split('\n').slice(1); // Skip header
+        const drives: Array<{ path: string; type: string }> = [];
+        
+        for (const line of lines) {
+          const trimmed = line.trim();
+          if (!trimmed) continue;
+          
+          // Parse "C:            3" format (DeviceID and DriveType)
+          const match = trimmed.match(/^([A-Z]:)\s+(\d+)$/);
+          if (!match) continue;
+          
+          const [, deviceId, driveType] = match;
+          const drivePath = `${deviceId}\\`;
+          
+          // Verify drive is actually accessible before including it
+          try {
+            await fs.promises.access(drivePath);
+          } catch {
+            continue; // Skip if not accessible (unplugged/ejected)
+          }
+          
+          // DriveType: 2=Removable, 3=Local Fixed, 4=Network, 5=CD-ROM, 6=RAM Disk
+          let label = drivePath;
+          if (driveType === '2') {
+            label = `${drivePath} (Removable)`;
+          }
+          
+          drives.push({ path: drivePath, type: label });
+        }
+        
+        return drives.sort((a, b) => a.path.localeCompare(b.path)).map((d) => ({ path: d.path, label: d.type }));
+      } catch (error) {
+        console.warn('Failed to query drive types via wmic, falling back to simple enumeration', error);
+        // Fallback to basic enumeration
+        const drives: { path: string; label: string }[] = [];
+        const probes: Promise<void>[] = [];
+        for (let code = 65; code <= 90; code += 1) {
+          const letter = String.fromCharCode(code);
+          const drivePath = `${letter}:\\`;
+          const probe = fs.promises
+            .access(drivePath)
+            .then(() => {
+              drives.push({ path: drivePath, label: drivePath });
+            })
+            .catch(() => undefined);
+          probes.push(probe);
+        }
+        await Promise.all(probes);
+        return drives.sort((a, b) => a.path.localeCompare(b.path));
+      }
+    }
+
+    if (process.platform === 'darwin') {
+      try {
+        const entries = await fs.promises.readdir('/Volumes', { withFileTypes: true });
+        const volumes = entries
+          .filter((entry) => entry.isDirectory())
+          .map((entry) => ({ path: path.join('/Volumes', entry.name), label: path.join('/Volumes', entry.name) }));
+        return volumes.length > 0 ? volumes : [{ path: '/', label: '/' }];
+      } catch {
+        return [{ path: '/', label: '/' }];
+      }
+    }
+
+    return [{ path: '/', label: '/' }];
+  }
+
   private buildSearchBases(): string[] {
     const bases = new Set<string>();
     const appPath = app.getAppPath();

src/main/services/LibraryService.ts

@@ -4,7 +4,18 @@ import { createHash } from 'node:crypto';
 import path from 'node:path';
 import fg from 'fast-glob';
 import { parse } from 'csv-parse/sync';
-import { AppSettings, AudioBufferPayload, AudioFileSummary, CategoryRecord, LibraryScanSummary, SplitSegmentRequest, TagUpdatePayload } from '../../shared/models';
+import {
+  AppSettings,
+  AudioBufferPayload,
+  AudioFileSummary,
+  CategoryRecord,
+  ImportFailureEntry,
+  ImportSkipEntry,
+  LibraryImportResult,
+  LibraryScanSummary,
+  SplitSegmentRequest,
+  TagUpdatePayload
+} from '../../shared/models';
 import { DatabaseService, FileRecordInput } from './DatabaseService';
 import { SettingsService } from './SettingsService';
 import { TagService } from './TagService';
@@ -292,6 +303,138 @@ export class LibraryService {
     return cleanedCount;
   }
 
+  /**
+   * Imports external WAV files from the provided sources, copying them into the library while
+   * skipping duplicates based on the audio checksum. Imported files land under `_Imports/<date>`.
+   */
+  public async importExternalSources(sourcePaths: string[]): Promise<LibraryImportResult> {
+    // eslint-disable-next-line no-console -- Log import start for debugging.
+    console.log('Starting import from:', sourcePaths);
+    
+    if (!Array.isArray(sourcePaths) || sourcePaths.length === 0) {
+      return { imported: [], skipped: [], failed: [] };
+    }
+
+    const libraryRoot = this.settings.ensureLibraryPath();
+    const normalisedLibraryRoot = this.normalizeAbsolutePath(libraryRoot);
+    const libraryRootWithSlash = normalisedLibraryRoot.endsWith('/')
+      ? normalisedLibraryRoot
+      : `${normalisedLibraryRoot}/`;
+
+    const existingFiles = this.database.listFiles();
+    const knownChecksums = new Set<string>();
+    const knownPaths = new Set<string>();
+    for (const file of existingFiles) {
+      if (typeof file.checksum === 'string' && file.checksum.length > 0) {
+        knownChecksums.add(file.checksum);
+      }
+      knownPaths.add(this.normalizeAbsolutePath(file.absolutePath));
+    }
+
+    const importFolderRelativeBase = path.join('_Imports', new Date().toISOString().slice(0, 10));
+    const importFolderAbsolute = path.join(libraryRoot, importFolderRelativeBase);
+    await fs.mkdir(importFolderAbsolute, { recursive: true });
+
+    const { files: candidateFiles, failures } = await this.collectImportCandidates(sourcePaths);
+    
+    // eslint-disable-next-line no-console -- Log discovered files for debugging.
+    console.log(`Found ${candidateFiles.length} candidate files, ${failures.length} collection failures`);
+    if (failures.length > 0) {
+      // eslint-disable-next-line no-console -- Log collection failures for debugging.
+      console.log('Collection failures:', failures);
+    }
+
+    const imported: AudioFileSummary[] = [];
+    const skipped: ImportSkipEntry[] = [];
+    const failed: ImportFailureEntry[] = [...failures];
+    const usedNames = new Set<string>();
+    const allowedExtensions = new Set(['.wav', '.wave']);
+
+    const folderRelativeNormalised = this.normalizeRelativePath(
+      path.relative(libraryRoot, importFolderAbsolute)
+    );
+    const folderForJoin =
+      folderRelativeNormalised === '.' || folderRelativeNormalised.length === 0
+        ? ''
+        : folderRelativeNormalised;
+
+    for (const candidate of candidateFiles) {
+      const extension = path.extname(candidate).toLowerCase();
+      if (!allowedExtensions.has(extension)) {
+        // eslint-disable-next-line no-console -- Log skip reason for debugging.
+        console.log(`Skipping ${candidate}: unsupported extension ${extension}`);
+        skipped.push({ path: candidate, reason: 'unsupported' });
+        continue;
+      }
+
+      const normalisedCandidate = this.normalizeAbsolutePath(candidate);
+      if (
+        normalisedCandidate === normalisedLibraryRoot ||
+        normalisedCandidate.startsWith(libraryRootWithSlash)
+      ) {
+        // eslint-disable-next-line no-console -- Log skip reason for debugging.
+        console.log(`Skipping ${candidate}: already inside library`);
+        skipped.push({ path: candidate, reason: 'inside-library' });
+        continue;
+      }
+
+      if (knownPaths.has(normalisedCandidate)) {
+        // eslint-disable-next-line no-console -- Log skip reason for debugging.
+        console.log(`Skipping ${candidate}: duplicate path`);
+        skipped.push({ path: candidate, reason: 'duplicate' });
+        continue;
+      }
+
+      // eslint-disable-next-line no-console -- Log checksum computation for debugging.
+      console.log(`Computing checksum for ${candidate}...`);
+      const checksum = await this.computeFileChecksum(candidate);
+      if (!checksum) {
+        // eslint-disable-next-line no-console -- Log skip reason for debugging.
+        console.log(`Skipping ${candidate}: checksum computation failed`);
+        skipped.push({ path: candidate, reason: 'checksum' });
+        continue;
+      }
+
+      if (knownChecksums.has(checksum)) {
+        // eslint-disable-next-line no-console -- Log skip reason for debugging.
+        console.log(`Skipping ${candidate}: duplicate checksum ${checksum}`);
+        skipped.push({ path: candidate, reason: 'duplicate' });
+        continue;
+      }
+
+      // eslint-disable-next-line no-console -- Log import attempt for debugging.
+      console.log(`Attempting to import ${candidate} with checksum ${checksum}...`);
+      try {
+        const record = await this.copyAndRegisterImportedFile({
+          sourcePath: candidate,
+          checksum,
+          importFolderAbsolute,
+          folderForJoin,
+          libraryRoot,
+          usedNames
+        });
+        imported.push(record);
+        knownChecksums.add(checksum);
+        knownPaths.add(this.normalizeAbsolutePath(record.absolutePath));
+      } catch (error) {
+        const errorMessage = error instanceof Error ? error.message : String(error);
+        // eslint-disable-next-line no-console -- Log import failures for debugging.
+        console.error(`Failed to import ${candidate}:`, errorMessage);
+        failed.push({
+          path: candidate,
+          message: errorMessage
+        });
+      }
+    }
+
+    if (imported.length > 0) {
+      this.resetMetadataSuggestionsCache();
+      this.search.rebuildIndex();
+    }
+
+    return { imported, skipped, failed };
+  }
+
   /**
    * Renames a file while keeping it in the current directory.
    */
@@ -1352,6 +1495,142 @@ export class LibraryService {
     return value.replace(/\\/g, '/');
   }
 
+  /**
+   * Gathers candidate audio files from the provided sources, handling both folders and individual files.
+   */
+  private async collectImportCandidates(sourcePaths: string[]): Promise<{
+    files: string[];
+    failures: ImportFailureEntry[];
+  }> {
+    const discovered = new Set<string>();
+    const failures: ImportFailureEntry[] = [];
+    const uniqueSources = Array.from(
+      new Set((sourcePaths ?? []).map((entry) => entry?.trim()).filter((entry): entry is string => Boolean(entry)))
+    );
+
+    for (const rawSource of uniqueSources) {
+      const absoluteSource = path.resolve(rawSource);
+      try {
+        const stats = await fs.stat(absoluteSource);
+        if (stats.isDirectory()) {
+          try {
+            const matches = await fg(['**/*.wav', '**/*.wave'], {
+              cwd: absoluteSource,
+              absolute: true,
+              onlyFiles: true,
+              suppressErrors: true,
+              caseSensitiveMatch: false
+            });
+            for (const match of matches) {
+              discovered.add(path.resolve(match));
+            }
+          } catch (error) {
+            failures.push({
+              path: absoluteSource,
+              message: error instanceof Error ? error.message : String(error)
+            });
+          }
+        } else if (stats.isFile()) {
+          discovered.add(absoluteSource);
+        } else {
+          failures.push({ path: absoluteSource, message: 'Unsupported file system entry.' });
+        }
+      } catch (error) {
+        failures.push({
+          path: absoluteSource,
+          message: error instanceof Error ? error.message : String(error)
+        });
+      }
+    }
+
+    const files = Array.from(discovered).sort((a, b) => a.localeCompare(b, undefined, { sensitivity: 'base' }));
+    return { files, failures };
+  }
+
+  /**
+   * Copies a single source file into the library and registers it in the database, returning the stored record.
+   */
+  private async copyAndRegisterImportedFile(options: {
+    sourcePath: string;
+    checksum: string;
+    importFolderAbsolute: string;
+    folderForJoin: string;
+    libraryRoot: string;
+    usedNames: Set<string>;
+  }): Promise<AudioFileSummary> {
+    const { sourcePath, checksum, importFolderAbsolute, folderForJoin, libraryRoot, usedNames } = options;
+    const extension = path.extname(sourcePath);
+    const baseName = path.basename(sourcePath, extension);
+    let sanitizedBase = this.organization.sanitizeCustomName(baseName);
+    if (!sanitizedBase) {
+      sanitizedBase = 'Imported';
+    }
+
+    let attempt = 0;
+    let candidateName: string = '';
+    let candidateAbsolutePath: string = '';
+    while (true) {
+      if (attempt === 0) {
+        candidateName = this.normaliseFileName(`${sanitizedBase}.wav`);
+      } else {
+        const suffix = this.organization.formatSequenceNumber(attempt);
+        candidateName = this.normaliseFileName(`${sanitizedBase}_${suffix}.wav`);
+      }
+
+      if (!usedNames.has(candidateName)) {
+        candidateAbsolutePath = path.join(importFolderAbsolute, candidateName);
+        const exists = await this.pathExists(candidateAbsolutePath);
+        if (!exists) {
+          break;
+        }
+      }
+
+      attempt += 1;
+      if (attempt > 9999) {
+        throw new Error('Unable to allocate a unique filename for the imported file.');
+      }
+    }
+
+    usedNames.add(candidateName);
+    this.assertWithinLibrary(libraryRoot, candidateAbsolutePath);
+
+    await fs.copyFile(sourcePath, candidateAbsolutePath);
+
+    try {
+      const stats = await fs.stat(candidateAbsolutePath);
+      const metadata = await this.extractAudioMetadata(candidateAbsolutePath);
+      const relativePath = this.toLibraryRelativePath(folderForJoin, candidateName);
+      const record = this.database.upsertFile({
+        absolutePath: candidateAbsolutePath,
+        relativePath,
+        fileName: candidateName,
+        displayName: path.basename(candidateName, path.extname(candidateName)),
+        modifiedAt: stats.mtimeMs,
+        createdAt: Number.isNaN(stats.birthtimeMs) ? null : stats.birthtimeMs,
+        size: stats.size,
+        durationMs: metadata.durationMs,
+        sampleRate: metadata.sampleRate,
+        bitDepth: metadata.bitDepth,
+        checksum,
+        tags: metadata.tags,
+        categories: metadata.categories
+      });
+
+      try {
+        const embedded = this.tagService.readMetadata(candidateAbsolutePath);
+        this.updateMetadataSuggestionsCache(embedded.author ?? null);
+      } catch (metadataError) {
+        // eslint-disable-next-line no-console -- Import should continue even if metadata read fails.
+        console.warn('Failed to read metadata from imported file', metadataError);
+      }
+
+      return record;
+    } catch (error) {
+      await fs.rm(candidateAbsolutePath, { force: true }).catch(() => undefined);
+      throw error;
+    }
+  }
+
   /**
    * Resolves and caches the music-metadata parseFile implementation.
    */

src/preload/index.ts

@@ -5,6 +5,7 @@ import type {
   AudioBufferPayload,
   AudioFileSummary,
   CategoryRecord,
+  LibraryImportResult,
   LibraryScanSummary,
   SplitSegmentRequest,
   TagUpdatePayload
@@ -26,9 +27,18 @@ const api: RendererApi = {
   async rescanLibrary(): Promise<LibraryScanSummary> {
     return ipcRenderer.invoke(IPC_CHANNELS.libraryScan);
   },
+  async selectImportFolder(): Promise<string | null> {
+    return ipcRenderer.invoke(IPC_CHANNELS.dialogSelectImportFolder);
+  },
+  async listSystemDrives(): Promise<string[]> {
+    return ipcRenderer.invoke(IPC_CHANNELS.systemListDrives);
+  },
   async listAudioFiles(): Promise<AudioFileSummary[]> {
     return ipcRenderer.invoke(IPC_CHANNELS.libraryList);
   },
+  async importExternalSources(paths: string[]): Promise<LibraryImportResult> {
+    return ipcRenderer.invoke(IPC_CHANNELS.libraryImport, paths);
+  },
   /** Retrieves a single audio file summary by id, returning null when the record no longer exists. */
   async getAudioFileById(fileId: number): Promise<AudioFileSummary | null> {
     return ipcRenderer.invoke(IPC_CHANNELS.libraryGetById, fileId);
@@ -87,8 +97,8 @@ const api: RendererApi = {
   ): Promise<void> {
     return ipcRenderer.invoke(IPC_CHANNELS.libraryUpdateMetadata, fileId, metadata);
   },
-  onMenuAction(channel: string, callback: () => void): () => void {
-    const listener = () => callback();
+  onMenuAction(channel: string, callback: (payload?: unknown) => void): () => void {
+    const listener = (_event: Electron.IpcRendererEvent, payload?: unknown) => callback(payload);
     ipcRenderer.on(channel, listener);
     return () => ipcRenderer.removeListener(channel, listener);
   }

src/renderer/src/App.tsx

@@ -1,4 +1,4 @@
-import { useEffect, useMemo, useState, type JSX } from 'react';
+import { useCallback, useEffect, useMemo, useState, type JSX } from 'react';
 import FileList from './components/FileList';
 import FileDetailPanel from './components/FileDetailPanel';
 import MultiFileEditor from './components/MultiFileEditor';
@@ -10,7 +10,7 @@ import EditModePanel from './components/edit/EditModePanel';
 import { useLibrarySnapshot } from './hooks/useLibrarySnapshot';
 import { loadPlayerFile, usePlayerSnapshot } from './hooks/usePlayerSnapshot';
 import { libraryStore, type CategoryFilterValue } from './stores/LibraryStore';
-import type { AudioFileSummary } from '../../shared/models';
+import type { AudioFileSummary, LibraryImportResult } from '../../shared/models';
 
 type RightPanelTab = 'listen' | 'edit';
 
@@ -25,14 +25,18 @@ function App(): JSX.Element {
   const [showStatusMessage, setShowStatusMessage] = useState(false);
   const [statusFadingOut, setStatusFadingOut] = useState(false);
   const [activeTab, setActiveTab] = useState<RightPanelTab>('listen');
+  const [importMessage, setImportMessage] = useState<string | null>(null);
   
   const statusMessage = useMemo(() => {
+    if (importMessage) {
+      return importMessage;
+    }
     if (!library.lastScan) {
       return null;
     }
     const { added, updated, removed } = library.lastScan;
     return `Scan complete: +${added} updated ${updated} removed ${removed}`;
-  }, [library.lastScan]);
+  }, [importMessage, library.lastScan]);
 
   useEffect(() => {
     if (statusMessage) {
@@ -44,6 +48,7 @@ function App(): JSX.Element {
       const hideTimer = setTimeout(() => {
         setShowStatusMessage(false);
         setStatusFadingOut(false);
+        setImportMessage((current) => (current === statusMessage ? null : current));
       }, 5000);
       return () => {
         clearTimeout(fadeTimer);
@@ -52,18 +57,6 @@ function App(): JSX.Element {
     }
   }, [statusMessage]);
 
-  useEffect(() => {
-    const cleanup1 = window.api.onMenuAction('open-settings', () => setSettingsOpen(true));
-    const cleanup2 = window.api.onMenuAction('rescan-library', handleRescan);
-    const cleanup3 = window.api.onMenuAction('find-duplicates', handleFindDuplicates);
-
-    return () => {
-      cleanup1();
-      cleanup2();
-      cleanup3();
-    };
-  }, []);
-
   const selectedFile = useMemo(
     () => library.files.find((file) => file.id === library.selectedFileId) ?? null,
     [library.files, library.selectedFileId]
@@ -155,14 +148,82 @@ function App(): JSX.Element {
     void libraryStore.search(value);
   };
 
-  const handleRescan = async () => {
+  const handleRescan = useCallback(async () => {
     await libraryStore.rescan();
-  };
+  }, []);
 
-  const handleFindDuplicates = async () => {
+  const handleFindDuplicates = useCallback(async () => {
     const duplicates = await window.api.listDuplicates();
     setDuplicateGroups(duplicates);
+  }, []);
+
+  const summariseImportResult = useCallback((result: LibraryImportResult): string => {
+    const parts: string[] = [`${result.imported.length} added`];
+    if (result.skipped.length > 0) {
+      parts.push(`${result.skipped.length} skipped`);
+    }
+    if (result.failed.length > 0) {
+      parts.push(`${result.failed.length} failed`);
+    }
+    return `Import complete: ${parts.join(', ')}`;
+  }, []);
+
+  const notifyImportSuccess = useCallback((result: LibraryImportResult) => {
+    setImportMessage(summariseImportResult(result));
+  }, [summariseImportResult]);
+
+  const notifyImportFailure = useCallback(() => {
+    setImportMessage('Import failed. Check logs for details.');
+  }, []);
+
+  const handleImportFromFolder = useCallback(async () => {
+    try {
+      const result = await libraryStore.importFromFolder();
+      if (!result) {
+        return;
+      }
+      notifyImportSuccess(result);
+    } catch (error) {
+      console.error('Import failed', error);
+      notifyImportFailure();
+    }
+  }, [notifyImportFailure, notifyImportSuccess]);
+
+  const handleImportFromDrive = useCallback(async (drive: string) => {
+    try {
+      const result = await libraryStore.importFromDrive(drive);
+      notifyImportSuccess(result);
+    } catch (error) {
+      console.error('Import failed', error);
+      notifyImportFailure();
+    }
+  }, [notifyImportFailure, notifyImportSuccess]);
+
+  useEffect(() => {
+    const cleanup1 = window.api.onMenuAction('open-settings', () => setSettingsOpen(true));
+    const cleanup2 = window.api.onMenuAction('rescan-library', () => {
+      void handleRescan();
+    });
+    const cleanup3 = window.api.onMenuAction('find-duplicates', () => {
+      void handleFindDuplicates();
+    });
+    const cleanup4 = window.api.onMenuAction('import-from-folder', () => {
+      void handleImportFromFolder();
+    });
+    const cleanup5 = window.api.onMenuAction('import-from-drive', (drive) => {
+      if (typeof drive === 'string') {
+        void handleImportFromDrive(drive);
+      }
+    });
+
+    return () => {
+      cleanup1();
+      cleanup2();
+      cleanup3();
+      cleanup4();
+      cleanup5();
     };
+  }, [handleFindDuplicates, handleImportFromFolder, handleImportFromDrive, handleRescan]);
 
   const handleKeepDuplicate = async (fileIdToKeep: number, fileIdsToDelete: number[]) => {
     await window.api.deleteFiles(fileIdsToDelete);
@@ -211,7 +272,7 @@ function App(): JSX.Element {
       if (element) {
         element.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
       }
-    }, 100);
+    }, 5000);
   };
 
   const handleUpdateCustomName = async (customName: string | null) => {

src/renderer/src/components/DrivePickerDialog.tsx

@@ -0,0 +1,78 @@
+import type { JSX } from 'react';
+
+export interface DrivePickerDialogProps {
+  drives: string[];
+  loading: boolean;
+  importing: boolean;
+  error: string | null;
+  onRefresh(): void;
+  onSelect(drivePath: string): void;
+  onClose(): void;
+}
+
+/**
+ * Modal dialog that lists available system drives for import selection.
+ */
+export function DrivePickerDialog({
+  drives,
+  loading,
+  importing,
+  error,
+  onRefresh,
+  onSelect,
+  onClose
+}: DrivePickerDialogProps): JSX.Element {
+  const handleBackdropClick = () => {
+    if (!importing && !loading) {
+      onClose();
+    }
+  };
+
+  return (
+    <div className="modal-overlay" onClick={handleBackdropClick}>
+      <div className="modal-content drive-picker" onClick={(event) => event.stopPropagation()}>
+        <header className="drive-picker__header">
+          <h2>Import From Drive</h2>
+          <p>Select a drive to copy new WAV files into your library.</p>
+        </header>
+
+        {error ? <div className="drive-picker__error">{error}</div> : null}
+
+        <div className="drive-picker__body">
+          {loading ? (
+            <p className="drive-picker__status">Loading available drives…</p>
+          ) : drives.length === 0 ? (
+            <p className="drive-picker__status">No drives were detected.</p>
+          ) : (
+            <ul className="drive-picker__list">
+              {drives.map((drive) => (
+                <li key={drive}>
+                  <button
+                    type="button"
+                    className="drive-picker__drive"
+                    onClick={() => onSelect(drive)}
+                    disabled={importing}
+                  >
+                    <span className="drive-picker__drive-label">{drive}</span>
+                    <span className="drive-picker__drive-hint">Press Enter to import from this drive</span>
+                  </button>
+                </li>
+              ))}
+            </ul>
+          )}
+        </div>
+
+        <footer className="drive-picker__footer">
+          <button type="button" className="ghost-button" onClick={onRefresh} disabled={loading || importing}>
+            Refresh Drives
+          </button>
+          <button type="button" className="ghost-button" onClick={onClose} disabled={importing}>
+            Close
+          </button>
+        </footer>
+      </div>
+    </div>
+  );
+}
+
+export default DrivePickerDialog;

src/renderer/src/stores/LibraryStore.ts

@@ -2,6 +2,7 @@ import type {
   AppSettings,
   AudioFileSummary,
   CategoryRecord,
+  LibraryImportResult,
   LibraryScanSummary,
   SplitSegmentRequest,
   TagUpdatePayload
@@ -60,8 +61,8 @@ export class LibraryStore extends EventTarget {
       window.api.listCategories(),
       window.api.listAudioFiles()
     ]);
-    const firstFileId = files.at(0)?.id ?? null;
-    const firstFile = files.at(0) ?? null;
+  const firstFileId = files[0]?.id ?? null;
+  const firstFile = files[0] ?? null;
     const nextVersion = this.snapshot.metadataSuggestionsVersion + 1;
     this.snapshot = {
       initialized: true,
@@ -252,7 +253,7 @@ export class LibraryStore extends EventTarget {
       ...this.snapshot,
       files: results,
       searchQuery: query,
-      selectedFileId: results.at(0)?.id ?? null,
+  selectedFileId: results[0]?.id ?? null,
       focusedFile: this.snapshot.focusedFile
     };
     this.refreshVisibleFiles(this.snapshot.selectedFileId ?? null);
@@ -299,7 +300,7 @@ export class LibraryStore extends EventTarget {
     this.snapshot = {
       ...this.snapshot,
       files,
-      selectedFileId: files.at(0)?.id ?? null,
+  selectedFileId: files[0]?.id ?? null,
       lastScan: summary,
       focusedFile: this.snapshot.focusedFile,
       metadataSuggestionsVersion: this.snapshot.metadataSuggestionsVersion + 1
@@ -308,6 +309,44 @@ export class LibraryStore extends EventTarget {
     return summary;
   }
 
+  /**
+   * Prompts the user to select a folder and imports audio files from it.
+   */
+  public async importFromFolder(): Promise<LibraryImportResult | null> {
+    const folder = await window.api.selectImportFolder();
+    if (!folder) {
+      return null;
+    }
+    return this.executeImport([folder]);
+  }
+
+  /**
+   * Imports from a drive path, refreshing local caches when new files are added.
+   */
+  public async importFromDrive(drivePath: string): Promise<LibraryImportResult> {
+    return this.executeImport([drivePath]);
+  }
+
+  private async executeImport(sources: string[]): Promise<LibraryImportResult> {
+    const trimmed = sources.map((entry) => entry.trim()).filter((entry) => entry.length > 0);
+    if (trimmed.length === 0) {
+      return { imported: [], skipped: [], failed: [] };
+    }
+
+    const result = await window.api.importExternalSources(trimmed);
+    if (result.imported.length > 0) {
+      const files = await window.api.listAudioFiles();
+  const preferredId = result.imported[0]?.id ?? this.snapshot.selectedFileId ?? null;
+      this.snapshot = {
+        ...this.snapshot,
+        files,
+        metadataSuggestionsVersion: this.snapshot.metadataSuggestionsVersion + 1
+      };
+      this.refreshVisibleFiles(preferredId ?? undefined);
+    }
+    return result;
+  }
+
   /**
    * Applies tag mutations to both the backend and the cached snapshot.
    */
@@ -415,7 +454,7 @@ export class LibraryStore extends EventTarget {
       .map((id) => fileLookup.get(id) ?? created.find((record) => record.id === id) ?? null)
       .filter((record): record is AudioFileSummary => record !== null);
 
-    const primaryId = justSplitRecords.at(0)?.id ?? null;
+  const primaryId = justSplitRecords[0]?.id ?? null;
     const nextSelection = new Set<number>(justSplitRecords.map((record) => record.id));
     if (primaryId !== null) {
       nextSelection.add(primaryId);
@@ -430,7 +469,7 @@ export class LibraryStore extends EventTarget {
       justSplitFileIds: justSplitRecords.map((record) => record.id),
       selectedFileId: primaryId,
       selectedFileIds: nextSelection,
-      focusedFile: primaryId !== null ? fileLookup.get(primaryId) ?? justSplitRecords.at(0) ?? null : null
+  focusedFile: primaryId !== null ? fileLookup.get(primaryId) ?? justSplitRecords[0] ?? null : null
     };
     this.emitChange();
     return created;
@@ -446,7 +485,7 @@ export class LibraryStore extends EventTarget {
       ...this.snapshot,
       settings,
       files,
-      selectedFileId: files.at(0)?.id ?? null,
+  selectedFileId: files[0]?.id ?? null,
       categoryFilter: null,
       focusedFile: this.snapshot.focusedFile,
       metadataSuggestionsVersion: this.snapshot.metadataSuggestionsVersion + 1
@@ -542,7 +581,7 @@ export class LibraryStore extends EventTarget {
       }
     }
     if (enforceVisible) {
-      return visible.at(0)?.id ?? null;
+  return visible[0]?.id ?? null;
     }
     return desiredId;
   }

src/renderer/src/styles/app.css

@@ -174,6 +174,95 @@ body {
   color: inherit;
 }
 
+.drive-picker {
+  width: min(28rem, 90vw);
+  display: flex;
+  flex-direction: column;
+  gap: 1.25rem;
+}
+
+.drive-picker__header h2 {
+  margin: 0 0 0.35rem 0;
+  font-size: 1.4rem;
+}
+
+.drive-picker__header p {
+  margin: 0;
+  opacity: 0.75;
+  font-size: 0.95rem;
+}
+
+.drive-picker__error {
+  padding: 0.75rem 1rem;
+  border-radius: 0.6rem;
+  background: rgba(220, 97, 97, 0.12);
+  border: 1px solid rgba(220, 97, 97, 0.35);
+  color: #f5d6d6;
+  font-size: 0.9rem;
+}
+
+.drive-picker__body {
+  min-height: 6rem;
+}
+
+.drive-picker__status {
+  margin: 0;
+  opacity: 0.75;
+}
+
+.drive-picker__list {
+  list-style: none;
+  margin: 0;
+  padding: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 0.75rem;
+}
+
+.drive-picker__drive {
+  width: 100%;
+  display: flex;
+  flex-direction: column;
+  align-items: flex-start;
+  gap: 0.3rem;
+  padding: 0.7rem 0.9rem;
+  border-radius: 0.6rem;
+  border: 1px solid rgba(255, 255, 255, 0.12);
+  background: rgba(255, 255, 255, 0.06);
+  color: inherit;
+  font: inherit;
+  cursor: pointer;
+  transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease;
+}
+
+.drive-picker__drive:hover:not(:disabled),
+.drive-picker__drive:focus-visible {
+  transform: translateY(-1px);
+  background: rgba(255, 255, 255, 0.12);
+  border-color: rgba(255, 255, 255, 0.3);
+}
+
+.drive-picker__drive:disabled {
+  opacity: 0.6;
+  cursor: default;
+}
+
+.drive-picker__drive-label {
+  font-weight: 600;
+  font-size: 1rem;
+}
+
+.drive-picker__drive-hint {
+  font-size: 0.8rem;
+  opacity: 0.7;
+}
+
+.drive-picker__footer {
+  display: flex;
+  justify-content: flex-end;
+  gap: 0.75rem;
+}
+
 .status-banner {
   text-align: center;
   padding: 0.25rem 1rem;

src/shared/ipc.ts

@@ -3,6 +3,8 @@ export const IPC_CHANNELS = {
   settingsGet: 'settings:get',
   settingsSetLibrary: 'settings:set-library',
   dialogSelectLibrary: 'dialog:select-library',
+  dialogSelectImportFolder: 'dialog:select-import-folder',
+  systemListDrives: 'system:list-drives',
   libraryScan: 'library:scan',
   libraryList: 'library:list',
   libraryGetById: 'library:get-by-id',
@@ -19,6 +21,7 @@ export const IPC_CHANNELS = {
   libraryMetadataSuggestions: 'library:metadata-suggestions',
   libraryUpdateMetadata: 'library:update-metadata',
   libraryWaveformPreview: 'library:waveform-preview',
+  libraryImport: 'library:import',
   tagsUpdate: 'tags:update',
   categoriesList: 'categories:list',
   searchQuery: 'search:query'
@@ -38,8 +41,14 @@ export interface RendererApi {
   setLibraryPath(path: string): Promise<import('./models').AppSettings>;
   /** Triggers a manual rescan of the library. */
   rescanLibrary(): Promise<import('./models').LibraryScanSummary>;
+  /** Opens a dialog to pick a folder to import audio from. */
+  selectImportFolder(): Promise<string | null>;
+  /** Lists available system drives for drive-level imports. */
+  listSystemDrives(): Promise<string[]>;
   /** Fetches the current list of audio files. */
   listAudioFiles(): Promise<import('./models').AudioFileSummary[]>;
+  /** Imports external audio files into the library. */
+  importExternalSources(paths: string[]): Promise<import('./models').LibraryImportResult>;
   /** Retrieves a single audio file summary by id, or null if it cannot be resolved. */
   getAudioFileById(fileId: number): Promise<import('./models').AudioFileSummary | null>;
   /** Fetches groups of duplicate files based on checksum. */
@@ -81,7 +90,7 @@ export interface RendererApi {
     metadata: { author?: string | null; copyright?: string | null; rating?: number }
   ): Promise<void>;
   /** Listens for menu actions from the main process. Returns a cleanup function. */
-  onMenuAction(channel: string, callback: () => void): () => void;
+  onMenuAction(channel: string, callback: (payload?: unknown) => void): () => void;
 }
 
 declare global {

src/shared/models.ts

@@ -78,6 +78,35 @@ export interface LibraryScanSummary {
   total: number;
 }
 
+/** Enumerates reasons why an import candidate might be skipped. */
+export type ImportSkipReason = 'duplicate' | 'checksum' | 'unsupported' | 'inside-library';
+
+/** Describes a source entry that was skipped during an import run. */
+export interface ImportSkipEntry {
+  /** Absolute path of the skipped file. */
+  path: string;
+  /** Reason the file did not qualify for import. */
+  reason: ImportSkipReason;
+}
+
+/** Records a failure encountered while processing an import candidate. */
+export interface ImportFailureEntry {
+  /** Absolute path of the problematic file or directory. */
+  path: string;
+  /** Human-readable message explaining the failure. */
+  message: string;
+}
+
+/** Summary returned after importing external audio sources. */
+export interface LibraryImportResult {
+  /** Files successfully copied into the library. */
+  imported: AudioFileSummary[];
+  /** Candidates that were skipped with a known reason. */
+  skipped: ImportSkipEntry[];
+  /** Candidates that failed due to unexpected errors. */
+  failed: ImportFailureEntry[];
+}
+
 /**
  * Shape of persisted application settings.
  */