Thanks a bunch. Yeah, I only mentioned the Oppo/Squeezebox as I will contend with that later and might give it some thought on the best solution for the Rendu. But you helped me a great deal. I have a QNAP NAS, so I'll look to see if it is compatible with Minimserver.
Edit: so on qnap's website, they offer the Minimserver download as apps for the QNAP, so I think we are good with it. I don't know if I follow the OpenHome config, but will give it a shot.