Reply to Traktor - Sound is coming through my macbook and not my speakers

Hi, I have a midi controller connected to my macbook with traktor pro 2. I am getting sound through my laptop and the sound is working, however, i need to route the sound through my mixer instead.

How can I rearrange it so the sound isn't coming through my macbook but through my mixer? I'm new to traktor.

Please help if you know, I would appreciate any help!

Brendan