Local Music Organizer

Local Music Organizer (LMO) is a native macOS toolkit for large local music libraries in Apple's Music.app. It works alongside Music.app rather than replacing it, helping maintain owned files. A persistent SQLite Library Index powers Library Dashboard, Library Map, Track Usage, Playlist Compare and File Search. Refresh Music Changes syncs edits without rebuilding the library. Health Check identifies missing tracks, broken references and orphaned audio files; reviewed relinking restores moved tracks or folders. Album Completeness detects gaps in track/disc numbering, while Artwork Check finds missing covers. Separate tools find Playlist Duplicates, Library Duplicates and Quality Duplicates. Real-time A/B Compare lets you align passages, match playback loudness temporarily, switch instantly between recordings and inspect live spectra without altering either source. File Maintenance checks permissions, filenames, Finder metadata and hidden audio tags. It offers selective, verified fixes after explicit review, including MP3/M4A cleanup without re-encoding. Diagnostics remain read-only; successfully removed embedded tags cannot be undone. Audio Inspector examines codecs, bitrates, sample rates, bit depths and spectrograms. Audio Authenticity Analyzer flags possible lossy-to-lossless transcodes and sample-rate upscaling for review, not as definitive judgments. Repair / Convert processes FLAC, ALAC, WAV, MP3, APE, TAK, WavPack, CUE albums, DSF/DFF and SACD ISO, with verified batch output. Vinyl De-click offers before/after previews. Shuffle Builder creates less repetitive playlists without replacing the originals. ORIGINAL, CLASSIC and GLASS players add real-time spectrum visualization and shared playback controls. All library diagnostics and audio processing run locally. No cloud uploads, separate account or subscription. Available for macOS 14+ on Intel and Apple Silicon, exclusively via the Mac App Store. Full-featured 3-day trial; US$29.99 one-time unlock.