May I suggest a simple A/V switcher that has RCA-type jacks? Simply connect the digital outs from the combi-player and the demodulator to two video inputs on the switcher, and the video output from the switcher to the receiver's digital input. I'm recommending the video jacks to assure a wide-bandwidth connection; any connection that can handle video can handle digital audio. Radio Shack is one source of such a switcher. You might find one that can be used with your remote.

Larry