musikCube

musikCube is an mp3 player for the modern generation. It helps you just listen to what you want to hear, while offering innovative features not seen elsewhere. For the technical user, musikCube is based on an embedded SQL database engine known as sqlite. For the non technical user, that means its fast. Really fast. "Dynamic playlists" allow fully automatic, randomized playback of songs based on your observed listening habits. The more you listen, the smarter it gets. It also features browsable, user reorderable playlists.

Link:
http://www.musikcube.com