I am trying to connect my PianoDisc player to my Sonos system. I believe I have all of the correct cables connected in the correct manner, but when I try to play through Sonos, my Sonos speakers play the accompaniment music softly along with a loud whining sound (which the PianoDisc tech support individual says is the midi info trying to get to the piano), but the piano part does not play at all. Do you have any recommendations? I am using RCA cables from Audio Out on the PianoDisc player to the Audio In on the Sonos Connect, and then RCA cables from Audio Out on the Sonos Connect to the PianoDisc speakers located underneath the piano. Could the problem be that the Sonos connect needs to be a Sonos Connect:AMP?