Hello, I am using the latest version on MIXXX, a Traktor S2 MK 2 and a Beringer UMC22 . I run a radio show and MIXXX and the hardware work ok. They sound great. However I only have limited functionality from the Traktor. I can select tracks, mix channels and thats about it. What I really need is (in old money) pre fade listening. I cannot listen to tracks before they are broadcasted live. Any ideas how I can solve this problem.