Hello again, Zunhui,
Thanks for this. As I kept rereading your notes, I think I'm getting a clearer picture of things. And part of what I need is already in place: WMP clients, running locally on different Windows machines on my LAN. This is good.
However, WMP does not seem to automatically update their library databases on any given local computer to be in sync with all of the shared Music, Pictures, and Videos libraries available on the network. I have to click on the ORGANIZE, APPLY MEDIA INFORMATION INFORMATION CHANGES button, to make this happen. But in any event, it does NOT duplicate the media files themselves from machine to machine and this is good!!
But I'm having problems now getting each local client WMP to recognize that new machines have been added to the network (or, rather, that Music and Videos files have been shared on the network by other hosts).
Here's what WMP shows me, for example, on one machine (which I'll call WORK):

Clearly, WMP is already looking across my LAN and seeing the content of those shared libraries. And when I opened WMP on the HP Laptop Libraries host machine, it is currently "updating library" from the shared folders on a third machine on this LAN, called SPOUSE... but while Windows on WORK can see shared folders on that SPOUSE machine (called "Music Library" and "Videos on 8TB" respectively), WMP on WORK cannot seem to find that these exist as other libraries.
So that brings me to Playlists and Libraries and Search. More questions:
- How can I create a playlist on one client machine (using WMP), and have the other WMP client machines share that playlist? Is there some kind of "publish" function that can share playlists (or library structures) across several different clients on a LAN? (Without having to do something like an automated robocopy script).
- How can I search across multiple libraries, without having to do the search library by library?
- I've added FILE PATH to the VIEW settings, but this shows me IP addresses rather than host names. As I don't tend to memorize too many IP addresses, is there any useful way to have these show by machine name? (IPv6 addresses are even less meaningful to me...)

Thanks again. Most helpful "talking" with you about this!
Cheers,
Mike