Yeah, I did both. I can have one monitor plugged into either of the outputs and it plays from that monitor just fine. The output settings are fine too I believe. Here's a screenshot of it:
http://img97.imageshack.us/img97/499...01222at105.png
Edit: So I checked the back of the monitors, once I adjusted the levels on the right monitor (the one that wasn't playing sound atm) - sound started coming equally out of both.
However it seems that my right monitor has like a problem with the woofer. Fucking lame. Gotta go back to GC and pray they have a solution for me.