Well you need an external audio card to do this, that's what Traktor's Audio 4/6/8/10 cards are for, you can't do this straight out you computer/laptop..
If you have use of an external soundcard, then you just need to set it up so each deck output in traktor, is set to the corresponding individual outs on the card, and then run cables from the card, to the mixer.
So basically, in traktor, Deck A will go out Output 1 and 2, B = 3/4 C = 5/6, D = 7/8
Obviously to run all four decks you will need a card with 8 seperate outputs in order to achieve this.
Post edited by owner 11/22/2011 2:02:51 PM