I strongly recommend them. Tell them artists and tracks you like and boom, your own personal radio station(s) (yes, you can create multiple stations, for different moods, for instance). First 10 hours are free. $36/year or $12/quarter thereafter. 128k MP3 audio (OK, I actually don't know if it's MP3, but I do know it's 128k, and I'm pretty sure I've heard the chimes). Flash required. Yes, I know, I hate Flash, too.