1th and 2th Channel work 1th and 2th deck with 2 Numark Ndx800 (no in timecode)
3th Ch play 3th deck in timecode with technics 1200
4th Ch play 4th deck with ableton.
I've connect Korn Zero 4 to IMac intel core 2 duo Osx 10.6.8 with firewire cable.
2 ndx800,"Usb Midi" mode, in 1th and 2th channel in cd/line and set "Audio+Midi" and connect to mac with usb cable. (without timecode cd)
Technics in 3th ch in phono and set "Midi" (with timecode vinyl)
4th ch set in "Midi".
I've the problem with zero edit because there is not zero 4 but zero 8 set....
and when select in traktor control manager "ndx800 decka ec...", after click "close" and open again,it does not stores.
Help me and sorry for my bad pizza english!

Sorry how can i post my screenshot?