
top right of Cross gui are three knobs ,,middle one is mix ,,, turn fully counter clock wise ,, this allows only monitor/cue /source to play through headphones ,,

trying to run controller in 32 bit mode have you selected asio U-Mix in audio selection/drop down menue ,,
in preferences the main tab ,,enable tool tips ,, give labekls for controls ,, might help you navigate gui ,,
hope this is a little bit clearer
