I've been playing around with magnatune.com. The basic idea is that you can find unsigned artists and if you like their music buy it—or if you don't want to, you don't have to! Brilliant.
An amazing web application for recording your own tracks with classic analogue loop sequencers.
N.B. I realised after posting this video to UStream that some of the problems I had setting up a blank pre-set simply involved restarting the application.