hello @fastfreight !
Sorry, perhaps I should have said more words to clarify, or perhaps you are not aware and therefore it is not in your recent thoughts. I mean in regards to this:
https://www.grimmaudio.com/news/big-firmware-update-for-mu1-and-mu2/
In your MU1 have you tried Jplay, instead of Roon? (or Tidal connect)
EDIT: I was going to say give it a try and let me/us know how it is, but I just read this: Please note that a UPnP server should be running in the network, the MU1 and MU2 do not offer that function.
I don’t get it, what does that mean? One needs another server to run their server?

