So the power's been out here all day, some POLE FIRE or something. Finally comes back, I get back to work on my level and things seem strange. Then I notice the sound is reversed! What's on the left is sounding on the right, and vice versa... I checked settings, changed audio options galore in Windows etc.. then finally, "It's like I have my headphones on backwards." Turns out the game is smarter than me. 5pm starting a work day has effects on brain power apparently! So if your stereo sound is ever reversed in the game, check your headphones first. Not my proudest moment.