Sorry to say, but it isn't really clear what is happening here.
I can say that you want to use your AVR to bring all of your source devices together.
I don't know about the One Connect box, and I don't want to know anything about the One Connect Box.
Dave, usually when a new person hits the forum, we try to give uplifting and cheerful advice. TLS Guy has probably setup more new hardware than all the people you've ever met put together and shadyj is no slouch either. You may have noticed, neither thought your One Connect box was worth the time of day. You may have also noticed that connecting your headphones the old fashioned way, with a cord, was also getting some love.
Since you spent money to acquire your gear, this may be a bit disappointing. You don't know me (or them) from adam, but this is a hobby they know, love and have a world of experience setting up. IMHO, I'd take a look at what they suggested and not do anything else or buy anything else until you've given their advice a thorough try.
Most of the time, the people here are pretty cheerful. Perhaps after you take a shot at what they said, you'll be pretty cheerful when you reply back that "hey, it started working!". Maybe. It could happen.
