hey dude whats up? i am using the firepod, and this is what yuo do. press f5 on if you are using a pc, or look for vst inputs. make sure all the imputs you are using, i am guessing 1 and 2 for the firebox, are highlighted (the on signal). also, most importantly, make sure that your device is selected in device manager. hope that helps bud.
Josh
