Am currently hooked on Moby's new album 'Innocents' and I really love the cheeky way in which Moby (Or his agency) is asking listeners to download the album. They have now uploaded all the songs on You Tube. For songs without videos, they placed an iTunes logo right on the still used for the accompanying song. Then they turned it into an annotation that leads straight to the iTunes store. Deceptively simple but it does what you want listeners to do. Listen, enjoy the music and then proceed to buy the album.