Something similar does exist: http://labs.echonest.com/Uploader/index.html http://labs.echonest.com/Uploader/index.html It detects places in songs where the so

Something similar does exist: http://labs.echonest.com/Uploader/index.html http://labs.echonest.com/Uploader/index.html It detects places in songs where the sound is similar, and can jump between these places in the track to make a seamless unending song.