My friend just bought a "HP dvd 940e 18X Super Multi DVD Writer, External" (the "e" must represent "external"). He said the writer will play movie DVD's, but there is no sound associated with them. I'm not near him to help physically, but I'm in email contact with him. This unit came with Nero software. Can someone help me help him resolve the "sound" issue he has? Thanks loads guys. Hope to hear from someone soon.