I'm just gonna copy and paste this from another forum I asked this on:
This might sound weird but is there a way to make the game mono for sound? The stereo effects are annoying me because I am partially deaf in my left ear to the point of not being able to register what the sound actually is if that makes any sense. So what happens in the game is someone is slightly to the left or even head on and it sounds way quieter than if I was standing there and listening with just my 1 good ear so what I always have to do is turn way more left to actually hear the voice or sound normally which is annoying because that means Im not looking at the person who's talking. Anyways, it all boils down to is if there is a way to get the sound to all come through 1 headphone, regular speakers are not an option here. My onboard sound drivers don't seem to have mono as one of the options, stereo, 4,5 or 7 speakers are the only ones available for playback.