LMS (Lightweight Music Server) is an self-hosted music streaming server that gives you access to your own library from anywhere via a web interface. Compatible with the Subsonic / OpenSubsonic API, it also works with most mobile clients on the market.

It offers transcoding audio on the fly, ReplayGain support, a Jukebox feature, keyboard shortcuts, as well as rich discovery: filtering by genre and mood, similar artists and albums, radio mode, random / most listened / recently added navigation, favorites and playlists. Advanced metadata (multi-valued tags, artist relationships, output types, MusicBrainz identifiers) ensure clean deduplication. Podcasts, synchronized lyrics, ListenBrainz scrobbling and multi-library support complete the set.

Written in C++ on the Wt framework with a SQLite database, LMS is deliberately lightweight and deploys via Docker. It handles multi-user with several authentication backends: internal (hashed/salted passwords), PAM, and SSO via HTTP header.