No sound from dvd with xine.

I have tried to get xine to play the sound while viewing a dvd (Signs - Mel Gibson movie). While the picture is great. I get absolutely no sound. I have tried various parameters but no go. I read the audio input and the last part says disk=off. I have installed all the codecs that I can including those for ac3 (a52). I can post any output needed. Might someone point me in the right direction. DVD is 16x, Sound card is SBLive 5.1. Symlinks and permissions are set and correct AFAICT. TIA, Curtis.