VisiTunes

This is a content-based MP3 playlist generator and jukebox. It uses the audio content of MP3 files to calculate a measure of similarity between songs, and uses this information to generate and play lists of songs that it determines to be similar to a seed song selected by the user.

It can create playlist files in M3U format that can be played with any media player program, or it can be used as an automated jukebox, selecting and playing similar song files.