ddj-xp2 help

so heres my setup... i use RB in performance mode bc i use beatport subscription...i just removed my ddj-1000 and added  2 cdj 3000s and an analog rotary mixer... i added a xp2 bc i wanted the sampler features, along w the fx.... currently i have all the pioneer products into my mac using a usb hub, i get the fx, cues from the xp2 but not the samples.. i use the aggregator for the cdjs dunno if that means anything. what am i doing wrong? i see the samples playing but no volume coming through. thank u