Reply to VersaPort Question

Hello,

I own one American Audio VersaPort, my question is can I cue with my headphones connected directly to the headphone jacked from the audio interface?

I was trying yo use it with mixxx and traktor, but in both i can only set the outputs to example:
Main 1/2
Monitor 3/4
But the audio that comes from the headphones is the main, I hear both songs.
Is it possible to set the headphone output to work as 3/4?

I have the American Audio VersaPort ASIO drivers installed.
Any solution?
Thanks in advance.