I just recently noticed this but now that I have 1.08 installed when I click this option nothing happens.
It worked fine for 1.05 [able to click on and off as I pleased] and I was able to get a good since of the BF hearing what direction shots as well as incoming vehicles were coming from ***with 5.1 speakers.
Doing basic tests I updated drivers [Realtec HD Audio r.1.69 driver version:188.8.131.5233...just released] ***Still nothin. ***I then uninstall ArmA and reinstalled 1.05, again Hardware Acceleration works like a charm. ***Knowing that it works in 1.05 I updated back to 1.08 and to my dismay same problem nothing happens...WTF
Without surround sound its next to impossible to figure out what direction your being shot from and incoming vehicles always sound like they are coming from infront of you even with the most recent OpenAL