instinct no headphones

hi folks,

im leaving tomorrow for a nice weekend with friends. and yep, im dj for one night, as usual. to perform well, i bought myself a hercules djcontrol instinct to use it on my mac with virtual dj pro 7.3.
after hours of trying to get some music out of it, i finally managed to play some music on both decks and switch between them using the controller. oh yeah! before that, deck 1 was playing through the normal channel. deck 2 was playing through my headphones. not really handy.

but, now i cant get any music on my headphone. doh!!!!!! im desperately looking for a fast and good solution. 

if someone can help me. i will say a nice prayer to the new pope .

thanks a lot!!!!!!!!!