Momixa - Pick two songs and get the perfect mix
Beata - For discovering the best new music from around the web
Liveset Database - Database site with tracklists from Dj sets
avant.fm - Avant.fm provides a customizable, listenable feed of new releases from the best indie record labels, across all genres.
FIEND.fm - "Hot or Not" for music discovery: 2 hrs of tracks in 2 mins
CLiGGO MUSIC - CLiGGO MUSIC provides free music enjoyment on your pc, smart phone or tablet.