Hi, I'm new here so be gentle with me! I've searched and searched but cannot seem to find a definitive answer so I'm hoping someone here can help. I have my PX850, I have my iPad with the iGrand app on it, I have my camera connector and I have my USB host cable. I also know how to tunr off the local control so that the speakers on my Privia are turned off. Now, what i want is to play the iGrand app, using my Privia, and for the sound to come out of the Privia speakers. Does the USB lead transmit the sound do i need a separate lead from the iPad headphone jack to somewhere on my Privia? I've looked at various You Tube vids and cannot see that there is this separate lead ?! thanks all,