Reply to Audio drop outs in Traktor

Anyone ever have a problem where the audio drops out for a split second, maybe more?

I'm at a gig right now, just playing a playlist through iTunes, through my Kontrol S2 and I'm experiencing periodic audio drop outs.

I do have a lot of stuff plugged in, two wireless mics, 3 powered speakers, 4 lights.

Could this be caused by interference? Which cables are the most susceptible?

The USB cable for te S2 is totally isolated because I figured that would be the biggest culprit but it seems to keep happening.