Subsonic
Subsonic is a web-based media server. It is written in Java, so it can run on any operating system with Java support. Subsonic supports streaming to multiple clients simultaneously, and supports any streamable media (including MP3, AAC, and Ogg).
Not a 404, but almost
The docs for this application are not properly written yet. If you need them, please let us know in the Discord and we'll take the time to make them for you.