I used scratch pro 2 with timecode vinyls, played purely digitally for a long time and would now like to return to Traktor 3 Pro with a Djm 850 and time-codes again.Plates are mk2 and new. Theoretically it should work and ki says it could be because I don't have audio 6/10. What can I do? Do I have to buy a interface to run my system with timecode again?