Any time I click on any audio or video file explorer gets an error and need to close. Not only does it happen if I try to run the file but even if I right click the file. I have run several virus scans but nothing comes up. Any one have any ideas about this?

If it is a new problem try a System Restore to a point prior to the problem.

start > All Programs > Accessories > System Tools > System Restore

And the plot thickens. I dont have any restore points excpt for one created today and 12:01 AM

I'd suggest following the steps in this post:

http://www.d-a-l.com/help/showthread.php?t=32403

Then post your log on that (our sister) forum.