yes but as traktor can only use one soundcard you'll have to combine them using asio4all. I haven't done this myself but I'm sure google can help you there.
NOX USB will be deck A and PC outpout will be deck B
can you please confirm if below is right what you have suggested in my thread regarding nox single channel problem:-
What you are suggesting is i connect my PC's output to NOX's Phono/Line input and then redirect traktor's 2nd deck to PC's output?That will give me one channelfrom USb and the other one from PC's audio interface? Did i get that right?