Pandora

Do you like to listen to music on your computer?  Check out Pandora, a great site that will create "radio stations" and choose music for you to listen to based on parameters you enter.  Like Eric Clapton?  It will play a selection of Clapton music and other artists in the same bluesy vein.  Tiring of that, you might select a single favorite song.  Pandora will present a set including this song and other music similar in genre, tempo, and outlook.  You can program up to 100 different channels.  It's a great way to learn about new music.  Best of all, it's free.