Sell other band merchandise. Link to each band's website in a similar manner. Give concert dates, advance news, and other information that could not otherwise be obtained. Let fans set up their own websites about the bands. Link to them.
Host chats with the artists.
Advertise music by bands similar to the music which is currently playing. This is the kind of service I would like to see. And I think I am in pretty good company. This would be a great way to build back the goodwill you have destroyed by going after Napster and calling me a pirate. Good artists deserve to be rewarded.