A Pandora’s Box of Music
If you’re looking to “explore” different types of music based on your current interests, then Pandora is the way to do it. You type in some artists you like and it starts playing some music. As the songs come in, you give it feedback telling it that you like this song, you don’t like this one, or you can add more artists to the mix.
I don’t know how it does its magic, but it’s been pretty good at picking songs so far. It requires broadband and Macromedia Flash in your browser and the music just keeps streaming in. You can subscribe to the service or use the free, ad-supported service.