sounds weird?

Question

every time i play a racing game,the sound cuts out from loud to quiet,but when i play a game like doom its fine
my audio is a nforce nvmixer,and is intergrated audio,so is it worth reinstalling the audio drivers from nvidia or update my direct x
or would you buy a pci sound card,as you can pick them up quite cheap,and a sound card is allways better than intergrated options
any ideas

Answer 1

I think the best you can do is to buy a pci sound card preferably a Creative one.

Answer 2

update ur sound drives & direct x and ur microsoft framework