webplay creates from a collection of mp3s and Ogg-Vorbis files (directory or database) a web-based jukebox with support for multiple independent streams. it also maintains control over the stream and can change codec/bit-rate, skip or goto a track, etc.
mediadbs is a project to produce a flexible database system for tracking and searching for multiple forms of electronic media (eg mp3, divx, ogg) distributed on multiple servers in a local network. Currently only supports mp3.
The goal of the Standard MP3 Database Project (SMDP) is to provide a
standard means of storing MP3 ID3 tag and Ogg comment information within a database, such as PostgreSQL, and MySQL, along with an API for querying a SMDP-compliant database.