So it seems as if you map CROSSFADER to 'crossfader' or 'crossfader_slider' it seems to effect the cue/mix headphone setup. As in you're now unable to hear the cue deck in your headphones. It seems to follow the crossfader as far as headphone volume goes. I haven't done much more testing with this-- I'll post more later if I come up with some more info.
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