It was a homebuilt. I dug into it and it was the audio driver. What a pain to find the newer one. Sorry, but you omitted details so I can't help you look.
I recently got a new computer and I transfered all my music over to it. I authorized the account and all of that. But when I play some of the songs, it plays the first couple of seconds and then iTunes closes. It doesn't happen with all of my songs, just some of them. I transfered the music over a second time and the same thing happens. And the songs work perfectly fine on my ipod.