Marathon bugging my sound making it mono

I don't know if anyone else has this issue but I've played a couple games and I'm enjoying the game it's just my audio seems to be permanetly bugged where no matter what I do in settings on windows and marathon, the game seems to always make my audio mono as if there's a device that's connected to the game that isn't shown messing up my sound system. Keep in mind I do use Bluetooth headphones since my headphone jack is broken so maybe that's the problem but even still it just makes me not want to play because everything sounds distorted and loud.