Hi
my Traktor Output Rounting:

Main Left/Right >Monitor Output
"Ch A" Left/Right >Master Output

On the A6 hub
I have the following: ( back of hub)

Turntable A on the A6 Input A
Turntable B on the A6 Input B
Speaker A and B , connected to the A6 Output A
Earth wires connected to the A6 hub

I have the headphones plugged into the A6 Phone out.
I have also chosen the A6 as my sound card in the preferences,
so the problem is I cant hear the track in my headphones when I want to pre cue the track. Only time I can hear the track is when I side up the channel on my s2. Then when the sound comes out of my speaker ,then I can hear that track playing in my headphones.
I did choose the internal mix mode.
Please help.