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metadata-agregator/docs/research/lms/README.md
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Alexander a1f6701bac feat: initial implementation of metadata aggregator
- gRPC service with MusicBrainz provider
- PostgreSQL schema with migrations
- Service layer with database-first caching
- Repository pattern for data access
- YAML configuration support
- Research documentation for 17 music metadata projects
2026-04-28 16:28:53 +02:00

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# LMS (Lightweight Music Server)
## Overview
Self-hosted music streaming software with comprehensive metadata support. Access your music collection from anywhere using a web interface.
## Key Features
- **Stars**: 1,569
- **API**: Subsonic/OpenSubsonic
- **Language**: C++
- **Metadata**: MusicBrainz identifiers, artist relationships, release types
- **License**: GPL-3.0
## Source
| Resource | URL |
|----------|-----|
| **Repository** | https://github.com/epoupon/lms |
| **AUR Package** | https://aur.archlinux.org/packages/lms |
## Metadata Features
- Multi-valued tags: genre, mood, artists
- Artist relationships: composer, conductor, lyricist, mixer, performer, producer, remixer
- Release types: album, single, EP, compilation, live
- Release groups (different versions: remasters, reissues)
- MusicBrainz identifier support
- ListenBrainz integration
## Supported Tags
```
# MusicBrainz IDs
musicbrainz_composerid, musicbrainz_conductorid
musicbrainz_lyricistid, musicbrainz_mixerid
musicbrainz_producerid, musicbrainz_remixerid
# Sort order
albumartistssort, composerssort, conductorssort
lyricistssort, mixerssort, producerssort, remixerssort
```
## Artist Info Folder
Supports Kodi-style artist information folders:
- `artist.nfo` files for biography, sort name, MBID
- Custom artist images
## Self-Hosting
```bash
# Build from source (requires C++ compiler)
git clone https://github.com/epoupon/lms.git
cd lms
mkdir build && cd build
cmake ..
make -j$(nproc)
# Or use Docker
docker pull epoupon/lms
```
## Notes
- Very complete metadata support
- Handles duplicate artist/release names via MBIDs
- Lightweight C++ implementation
- Active development (3 open issues)