Hi people, I recently bought a M-Audio fast track pro USB audio interface for my powerbook with OS X Leopard (10.5.2). Almost everything I planned on doing with it works out fine (for example, connecting it to 2 channels on an analog mixer, etc.) but there is one thing I can't figure out. When I'm at locations where I do not have a mixer available to connect my fast track pro with I'd like to do be able to do some internal mixing in Traktor 3. My fast track pro has 2 RCA outputs, stereo 1/2 and stereo 3/4. While mixing internal in Traktor I set my master to stereo 1/2, stereo 3/4 is not assigned to anything at this point. The problem I run into is that I can't figure out how to use my headphones the way Traktor is designed to use them. When I plug my headphones into my fast track pro, I'm able to select stereo 1/2 or stereo 3/4 as source for my headphones. As stereo 1/2 has the master assigned to it, this is the only signal I hear when I select this output at my headphones setup. The only other option, stereo 3/4 doesn't do anything. So basically, when internal mixing I've got 1 of the 2 RCA outputs assigned to the master output, how do I configure my headphones so I can use Traktor's cue-ing to prelisten etc. An overall note: I'm a bit disappointed by the options I have in my system preferences and in Traktor preferences about setting up this audio interface. In Traktor I can only select output 1/2/3/4 to be assigned to master/booth/monitor/record and in system preferences I can only enable/disable the 2 RCA outputs, 1 inputs and the S/PDIF in. I downloaded the newest drivers already, didn't change anything. Thanks in advance for your help!