First of all change in"Preferences" -Audio Setup to Numark Mixtrack Platinum  /  2 : in Output Routing: Mixing Mode, click "Internal"  and "Output Monitor " : L -: 3:Speakers out 2  /  R : 4:Speakers Out 3 /    Output Master L: Speakers out 0 / R : Speakers out 1.

Play ,Cue ,channels, crossfader, Filter, Load buttons, Gains, Filters, Sync, Headphones, Master & Cue Mix, Pitch Bends function almost perfect in Traktor 3. Others functions like effects, loops etc doesn't work (you still can use those functions manually by mouse or touchpad) your comments will be appreciated :)

                            

Good Luck ! God Bless  !