I applied for a job like this about a dozen times during high school and college...got an interview once. I must not have looked "cool" enough.
What a great job though: Listening to music all day, getting advanced copies; getting free CDs; helping people discover great new bands. And you don't have to dress up to go to work. Sweet!
But...it's retail. And you wouldn't make squat, unless you're a manager. But it's still retail, so you would have to work retarded hours. And then I'd have to deal with people that want the newest Juvenile or Christina Aguilera CD...and I'd feel a need to smack the shit out of them.
Maybe one day, when I'm rich and don't really need the money, I can go and do a job like this.