I have an Asus A8N SLi motherboard which supports surround sound.
I have Creative DTT2200 5.1 speakers.
Using the Sound Manager utility provided by Asus, I can test the channels, of which all 5 output correctly with the "Front left, Centre, Front Right" etc, they all come out of the right satalites. There is also a demonstration of a bee hovering around you, which works too.
I play Counter Strike Source.
When I set the audio configuration to 5.1 Surround Sound and use the test function where a 3D room is shown with all 5 speakers, only the centre speaker produces output.
It's getting frustrating now, because I'm getting pwned by n00bs as I don't have a cat in hells chance of guessing where I'm being shot from.
Any help appreciated.