A PCM is the primary computer that you'll find in most modern vehicles. For most of the cars that use a PCM, it acts as the main computer system, encompassing various vehicle parts and functions.

Not stereo or PCM.<BR><BR>You say you are encoding your XviDs with AC3? I'll admit that this is not my area of expertise, but you could simply rip in stereo and let AC3filter encode the stereo ...