We broadcasters could learn a lot from Internet radio services like Last.fm and Pandora. Fred Wilson has written some comparative posts (he likes Last.fm better) that are a good introduction. See, Pandora vs. Last.fm, Pandora vs. Last.fm (continued), and More last.fm. All at A VC.
Updated 27 Nov. 2006:
But then there are people that love Pandora also. See Ryan Carter, Pandora: The future of music. Link: Download Squad. --Dennis