QUOTE (TheAttackMan @ Jun 21 2008, 10:02 AM)

I have the retail version
The reason that was asked was because the OEM has a codec that is an optional add-on. You ruled that out.
Next, please post you computer specs including your OS and audio card/chip information. Might as well add your video card/chip information also.
Just to check, make sure that you have the Windows folder option set to show file extensions for known file types and take a look at that file again. Some people rename the file as mpg but forget about the hidden file extension. If you did, you would see something that looks like this "(FileName).mpg.VOB"