Hi!
I probably shouldn't be the one answering this, cause I'm not a tech wiz. Also I don't no anything about problems concerning this game and I haven't played it myself (yet).
But, since you've had lots of viewings on the thread but no answers. And feeling sorry for anyone having to miss out on the sound...Here's a start for you:
Probably the most common problem with games!
Solution: update drivers! If you need help with that you need to tell what sound card you have.