External soundcard

I would like to Connect my Traktor Audio 10 soundcard to use with The DJay pro for Mac.
I only get sound on channel 1&2. What can I do to add 3&4 for the second player?

Is DVS also supported?

Just found your post. While searching for other DVS-Threads.

In DJ Pro you can route all your decks externally in the Settings.
Sadly DVS isn’t supported… :frowning: