in fact MIXXX did not convince me when I tried to use it (perhaps usual custion) but what if it is clear to me that the engine is missing a lot, lately it is going from bad to worse and who has made more progress lately say what they say is VirtualDJ and the Rekorbox, virtual it seems that it is not what interests denon and there are not supported equipments (although they manage to add more hardware every time) and the other is discarded for obvious reasons, serato at this height without support for the 5000M and not to mention prime 4, is why I think we need a solution already, it occurred to me that there may be others that do not know, maybe even denon surprises us with an engineDj when prime 4 is already a reality in the market
@ DJ_Vintage the purchase of serato could be a solution (although I prefer to buy virtualdj, do not tell this secret 
jejeje) the latter in video devastates with others and the future we like it or not is the video that only put tracks will happen sooner than later
regards