Re:I didn't see this option (Score 1)

Check imeem.com - they're doing the whole advertising thing with all the major labels and a lot of the indies giving the green light. The only difference with what your saying is that the artist doesn't need to do anything more than registering their music and allowing their music to be played on the site, since the music on imeem.com is uploaded by its users the artist need never even visit imeem.com, if they have enough fans they'll just start getting royalty checks.... or more likely their label will get the checks and take their cut first.