other game works properly, like CS, DoD. but in NS, left and right sound channel seems to be reversed. is there any solution?

Swap your speakers around!

I have the same problem, its a **** with some sets of headphones tho

thats crazy, other game works well, and i can't swap my speaker--they're too big

with certain soundcards, on your option menu, you can reverse the sound channels.

download the latest drivers for your card also.

maybe that will help.