Audio on DVD not working

[Wade Smart]

20081023 1526 GMT-6

I've been working on getting video to work on my computer for some weeks 
now but Im not getting any results.

Today I received 15 dvd's to review for work and Im having a horrific 
time getting anything to work.

So far VLC is the only player that will open the disk and play anything 
- but its not reliable. Sometimes it'll play - sometimes it wont. But 
even when it does, there is no audio.

I tried each of the audio settings on audio modules but none of them 
help with any sound.

I would greatly appreciate some help.

wade