It works fine!
I copied some music files over to an external HDD, used the Oppo RCA analog out to a pair of analog inputs on the Yamaha, then plugged in a small monitor to the Oppo via HDMI.
After powering up the Oppo I selected the menu and tweaked a few settings. Then, the moment of proof....I slapped on a pair of headphones, selected the playlist and, Voila`, we have music.
Now I am going to pack it all in boxes in preparation for the movers to come and haul everything to Arizona.