Reply to How would I connect my APC40 and Allen and Heath Xone 42?

I recently bought an apc40 and an allen and heath 42. If i wanna use ableton to dj live how would i connect my apc40 and xone 42 together then to the sound system..
I assume ap40-->computer-->interface-->mixer then what?
Back to interface then system?
Or straight from mixer to system?

I produce as well as dj and wanted to make sure the native instruments audio 6 interface is enough for all i want to accomplish (at most when producing maybe hooking up a guitar besides me mpk or apc).