I tried removing the Sooloos app from the QNAP and installing it again. Now I have the option to "display on", not sure what happened to the first install.

The missing Audio Endpoint for the C15 appears to be the result of having duplicate cores running. By default the QNAP app has the core enabled, and I was using the C15 as my core.

When I just have the QNAP app set as core, none of my music library loads. I have the majority of my music on the TwinStore and some on the QNAP. When I disable the QNAP core and let the C15 run the core all of my music loads. It appears in my configuration the QNAP works perfectly as Storage but not as a Core. I am OK with this, as the C15 can run as my core.

The MS200 problem was the result of a network cable that connects the network switch to the main network switch being disconnected. Not sure how this happened in the back of the TV stand, but was a reminder to check even the most basic connections.

Thanks again for all that posted information to help resolve these problems.

Anthem AVM70, 271, DSP7200x2, DSP7200.2HC, DSP5200x4, JL Audio F113,
Oppo UDP203, Panasonic UB9000, Kaleidescape Strato E, Apple TV 4K,
HDFury Vertex2, Epson LS10500, Stewart Filmscreen 110"