hi there, mapping seems to be ok when I check how every button/slider is mapped, however.. my mixer isnt responding (eventhough everything is mapped correctly) as I said). I am using double deck mode in dj player, with this midi-mapping. iPad / mixtrack-pro connected through an powered usb hub, headphones plugged the headphone connector, output to stereo over output1. Am i missing something? A setting? Mixer / PFL doesnt respond. thx!