Roon, Mac Mini, Qnap = exasperation

Roon Labs will not do this, why would they.

I suppose you are referring to this thread, which was posted in the discussion area for users, Roon Software Discussion, under the QNAP/Synology NAS sub-category, but be aware that this is not for official support:

(Anyway, your last post was that you got it to work with the IP address for the NAS. What has changed?)

Your new thread here is now in Support