LMS (Lightweight Music Server)

LMS (Lightweight Music Server) is an open-source, self-hosted music streaming server that provides a web interface to access and manage personal music collections. It supports rich metadata, multi-library setups, and compatibility with Subsonic/OpenSubsonic clients.

Key Features

• Web-based music library browsing with support for multi-valued tags (genre, mood, artists, etc.)
• Subsonic/OpenSubsonic API compatibility for external clients
• MusicBrainz identifiers and release/group support to handle duplicates and multiple versions
• ListenBrainz integration for scrobbling and synchronizing listens and 'love' feedbacks
• Recommendation engine and "radio" mode to fill play queues with similar tracks
• Audio transcoding for client compatibility and bandwidth reduction (relies on FFmpeg)
• ReplayGain support, playlists (m3u/m3u8), podcast support, and lyrics (embedded, lrc, txt)
• Multi-library support, artist information folder handling, and flexible album/track grouping
• User management with multiple authentication backends and admin configuration options

Use Cases

• Host and stream a personal music collection remotely with a browser-based UI
• Provide Subsonic-compatible streaming to mobile or desktop clients while preserving rich metadata
• Build a small-scale recommendation/radio service for private collections and curated playback

Limitations and Considerations

• The tag-based recommendation engine can significantly slow the UI on very large databases or under-constrained hardware; it can be disabled in administration settings
• On-the-fly transcoding increases CPU usage and may require configuring / provisioning FFmpeg and adequate CPU resources for smooth playback across low-bandwidth clients

LMS is suitable for users who want a lightweight, metadata-rich music server with Subsonic compatibility and features like recommendations, scrobbling integration, and flexible tagging. It is actively developed and distributed under the GPL-3.0 license.