Local Music Organizer
Organize Music.app libraries, analyze and convert audio
Local Music Organizer is a native macOS application for organizing, maintaining, analyzing, converting, and playing local music collections. It works with Apple's Music.app libraries and standalone audio files.
The application helps users find missing files, detect duplicate recordings, identify incomplete albums, inspect metadata, and understand playlist relationships. File Maintenance provides tools for reviewing and cleaning embedded audio tags, filenames, and file permissions.
Audio Inspector includes detailed technical analysis and spectrograms, while real-time A/B comparison helps evaluate different recordings without modifying the originals.
Repair / Convert supports common and specialist audio formats, including FLAC, ALAC, CUE, DSD, and SACD ISO. Shuffle Builder creates more varied playlists using spacing rules for artists and related musical projects.
Three built-in players — ORIGINAL, CLASSIC, and GLASS — provide local playback with real-time spectrum visualization.
All audio processing happens locally on the Mac. Compatible with macOS 14+ on Apple Silicon and Intel.
Free 3-day trial, followed by a one-time $29.99 purchase. No subscription.
Features
- Health Check detects missing files, orphan audio files, and incomplete albums.
- Duplicate detection identifies repeated playlist entries, library records, and different recording versions.
- File Maintenance inspects and cleans supported metadata, filenames, and permissions.
- Audio Inspector analyzes codecs, bitrates, sample rates, and frequency content with spectrograms.
- Real-time A/B comparison provides instant switching and optional loudness matching.
- Repair / Convert processes FLAC, CUE, SACD ISO, DSD, and other audio formats.
- Shuffle Builder creates playlists with configurable artist and track spacing.
- ORIGINAL, CLASSIC, and GLASS players provide real-time audio visualization.
- Persistent SQLite indexing supports large Music.app libraries.
- All processing runs locally without cloud services.
Use Cases
- Organize and maintain large Music.app libraries accumulated over many years.
- Find missing tracks, duplicate recordings, and incomplete albums.
- Inspect audio quality and compare different masters or releases.
- Clean unwanted metadata and correct audio filenames.
- Convert rare or incompatible audio formats for everyday playback.
- Build less repetitive playlists and enjoy music through built-in spectrum players.
Comments
I've been maintaining and repairing Apple computers since 1998 and collecting music since the early days of iTunes. Over the years, my library grew, along with problems like duplicates, missing files, inconsistent metadata, and repetitive shuffle playback. I originally built Shuffle Builder to make my own playlists more varied. It eventually evolved into Local Music Organizer, combining library diagnostics, audio analysis, file maintenance, conversion, and playback in one Mac app. I'd be interested to hear what challenges other collectors face when managing large local music libraries.
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Comments
I've been maintaining and repairing Apple computers since 1998 and collecting music since the early days of iTunes. Over the years, my library grew, along with problems like duplicates, missing files, inconsistent metadata, and repetitive shuffle playback. I originally built Shuffle Builder to make my own playlists more varied. It eventually evolved into Local Music Organizer, combining library diagnostics, audio analysis, file maintenance, conversion, and playback in one Mac app. I'd be interested to hear what challenges other collectors face when managing large local music libraries.
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