PS. I had vista and upgraded to windows 7 and everything works properly. I've downloaded a few new songs which all work fine in iTunes (my preferred player).

One other thing that came to mind is: I believe my original vista, before my hard drive failed, was a 64-bit and then upgraded to windows 7 which I believe was still 64-bit. When the people replaced my hard drive I had to bring my windows 7 upgrade cd, but since there was no operating system to upgrade from they installed their own 32-bit vista then used my upgrade to windows 7 so now I'm running 32-bit windows 7. I don't know if this would relate, I can't imagine it would but thought I'd let you know. Thanks a lot for any help.