Ok. Let's do this.
You'll have to make an aggregated audio device!
Press cmd + spacebar and type in "midi" and select the audio/midi configuration thingy. (I have no idea how it's called in English, I run the Dutch version of OSX).
Now press the little + symbol on the lower left and select "create aggregated" and select the outputs you want (probably something like "internal" and "s2 3/4", I have no idea since I don't own a S2).
Now select the highest sample frequency possible and give the device a name like "ULTRA WICKED MUTLI OUTPUT4THEBITCHES" or whatever you kids call it these days..
Now go into Traktor and select the just-created-audio-mega-awesome4thebiches-device and play around a little to get the correct outputs. Master will probably have to be set to 1 and 2, monitor to 3 and 4.
Good luck and don't hesitate to ask other questions on this subject!
Bookmarks