Setting up a Mixvibes U-Mix Control 2 DJ MIDI Controller

Hi Guys,
I have bought a Mixvibes U-Mix Control 2 DJ MIDI Controller for my lad. I need some help setting it up. The unit does not have a headphone socket, it links to the laptop. My question is this, how do I use headphones and have a sound output that can go to an amp? I am using a MacBook Pro. Any ideas what leads I need? I have seen a 3.5mm splitter but it sounds like it splits stereo to two single mono. Can I get an out put from USB or one of the other ports. Surely the internal mixer I have bought can be used with an amp etc? Any help would be appreciated. Cheers.
I have bought a Mixvibes U-Mix Control 2 DJ MIDI Controller for my lad. I need some help setting it up. The unit does not have a headphone socket, it links to the laptop. My question is this, how do I use headphones and have a sound output that can go to an amp? I am using a MacBook Pro. Any ideas what leads I need? I have seen a 3.5mm splitter but it sounds like it splits stereo to two single mono. Can I get an out put from USB or one of the other ports. Surely the internal mixer I have bought can be used with an amp etc? Any help would be appreciated. Cheers.