Edit audio file tags using SQL. Reads audio files in a directory, loads the tags into an SQLite database, accepts SQLqueries acting on this database, then (optionally) writes changes back out to the audio files.
Musiql is a command-line frontend to MPlayer that stores track and playlist information in an SQLite database and allows access to this database through SQLqueries entered on the command line.
MyBaD is a rewrite of Mike Oliphant's DigitalDJ. It provides a database storage facility for Grip and a graphic interface for generating MP3 playlists through SQLqueries.