I got a set of z506 from logitech and im running a creative x-fi titanium sound card on my pc. I can't get sound to come out my rear speakers. When I play music or other games it's fine - sound on all ends - but when I play crysis 2, it plays in 2.1 sound with this annoying static in my 2 rear speakers. All drivers are updated. I'm not sure what settings to fiddle with and it's getting quite annoying.

Any help or advice would be appreciated!