Reply to Numark N4 Traktor Cue Problem

Okay so I have a Numark N4 and I'm running it with Traktor Pro 2. I have the mapping that Numark gives on the product page of the N4. However, I ran into a problem. When I cue a track it plays out both my speakers which are set to master and my headphones which are set to monitors. I only want to hear the cue through my headphones, not my speakers. So basically I want the cue not to come out of the master, only the monitors. Any help is much appreciated. Thanks.