StumbleAudio is a social music discovery site with a mission is to help you find music by new and exciting artists that you would like, rather than play or sell you the hits by known artists that you are “expected� to love. Our catalog has over 2,000,000 tracks by over 120,000 artists ready to be played in full length, high quality, free of charge. StumbleAudio started to build its recommendation engine by importing massive anonymous data of saved favorites, music preferences and buying patterns from several online download and actual music CD stores. As you use StumbleAudio the system learns from your “thumbs up� and “thumbs down� and constantly adjusts the music offered to your liking.