HEY i need help I have been trying to figure this out,

I usually DJ with my traktor s4 and my macbook pro,

i know have a gig at a club where I must use 2 CDJ2000 and a DJM800 , running through a Rene SL4 sound card, into my macbook.

the problem I am having is making the cdj work with Traktor! i can play music through the soundsystem, but the cdj does not do anything.

any help is welcome please,