if you want I'll help you...So, I use channels 2 and 3 for decks a and b of traktor,channel 1 for the loops in the deck c,and Channel 4 for maschine (Native Instruments) as vst in ableton.
I do not know how you want to play, if you want to use 2 channels for ableton and 2 channels for traktor use 8uot and set the vms4 sound card in audio preferences in ableton
Tell me how you want to use the channels and I'll help you, sorry if I write bad English