Uugghhhh

I installed iTunes 7, because it kept asking me to and I thought, what the heck? But it doesn't work. When I try to open iTunes one of those evil little boxes with the startling noise pops up and says:

"iTunes cannot run because it has detected a problem with your audio configuration."

I don't even know what that means. And I don't know what to do about it. And I'm annoyed because I was about to download the newest "This American Life" program for my run this afternoon. Buggers.

If anyone knows what to do, and surely some of you computer-types do know, please tell me! Thanks!