Every, and I mean EVERY, set of headphones I have work perfectly with all but my PC. For some reason, when I plug them into the headphone jack on the front of the computer, only the left earpiece will work. Does anybody know some way to fix this? It bugs me when I play any game, but mostly Tremulous and Jane's F/A-18 Simulator; those games are almost dependent on 3D sound, and I can't get that with only one earpiece working. Any help is greatly appreciated.