You may be able to find software to stream to a DMR client from Linux, I have no idea, I've never looked.
What my main point was, is that a DMR device requires something to push media to it, it's not a DLNA client in the sense that people usually think of. Does the Mini have a traditional DLNA client? Again, no idea, because I don't have one (and as you've seen, the manual is non-helpful.)
I wish more devices had access to network shares via SMB/CIFS and/or NFS, rather than DLNA. What's the difference, you ask? Although the experience may be the same on the client side, I find running a DLNA server to be bothersome. It appears that instead of waiting for the client to ask for a directory listing, they all want to build and maintain a database of all the files in the shared directories. When you have as many files as I do, that's a lot of CPU time, a lot of disk bandwidth, and a lot of memory -- and, when you add or move files, it needs to do it all again! And on top of all that, most of the servers also want to index the metadata in the files! Well for one thing, some of my files don't have any metadata (which makes for an ugly listing when you mix them with the ones that do!), and for another thing, why bother? I've already got my files indexed the way I want them by the way I've put them in directories!
