I cannot get any sound to play through my pa5x speaker or monitors when I connect my MacBook to my PA5X... I am using a Vst called Noire Pianos.. I also tried using MainStage... The MacBook recognizes the pa5x and it shows playing the keys on the MacBook screen but the sound will only play through the MacBook speakers and not the monitors or Paasmk2.... I am using a USB cable out of the back of the pa5x to the MacBook... I called tech support at Sweetwater but they couldn't help me either... They were going to write to Korg... Any ideas? I have spent hours trying to get this to work but no success.. I have a Yamaha Montage and I have no problem with that working.. Thanks for any help.... Ron