Well, I'm a late bloomer I guess. About two weeks ago I finally tuned into Last.FM, one of those "if you like _____ band, check out ______" type of sites. They recommend (and stream) music from other musicians based on your preferences. Sounds familiar?
About the time I was really digging LastFM, one of my friends told me about Pandora, another site with a much simpler interface and no need to install any "player" or anything. I've since been using Pandora exclusively. I've found several new songs on Pandora that I otherwise wouldn't hear while living in the Piney Woods. A few of you I know have satellite radio, another excellent source for new music. However, Pandora and LastFM allow you to rate a song good/bad/hate it and will fine tune your selections based on musical criteria put forth by the Music Genome Project. (Besides, it's free to use these online services!)
rant: I might continue to use Pandora more if I weren't being slapped with a monthly 3Gb transfer limit by the LeTourneau IT Department. (All students will be given 3Gb of free transfer, $100/semester if you want 10Gb/mon... and the prices go up from there.)