DDJ RB cant use headphones

Hi guys i need some help. I am using the RB with rekordbox. When i'm on the preference menu. It only gives me the same option to select for headphones, which is the same as the master output, I am using the usb to my laptop and the aux out on the rear of the unit into my desk mixer, The (1) & (2) cue buttons do not do anything when i press them, however if i click master on the controller then it obviously sends all audio to my headphones, Any help would be great. As i have not had a mix for around 3 years and i'm very disappointed that i have not been able to today! 

Note: I only got the controller today, so i have not had the headphone cues working previously. 

Regards