dj control air - headphones not working in djuced 18

they work but theyre being shitty with my contol air
as my songs are playin through my speakers and i go to try cue the next one no sound will come through the phones.
ive pushed the headphone button and tried changing the settings but no luck
my current out put is a usb sound card thingy if i put it to any others its only plays through the headphones

any suggestions?