When you installed the server and created the music library you told it the folder where the music files were on your NAS. All you need to do is add the new music media to that same folder and then for that library or the server as a whole you “scan library files”
Yes, I do have a PLEX Music Library stored on my NAS and Plex does scan this library.
So, what I would like to know is, If PLEX can scan this library does Plex identify somewhere in Plex where that the Music Library is stored. I know where that is right now but after I have more info in the NAS, can I rely on Plex to identify the library location for me some time in the future? If not, I believe this would be a good enhancement.
I am running app.plex.tv/desktop, version 1.20.4.3517.
As you can see below the ellipsis, “…” menu does not show the “Get Info” that was shown on the “Open the Media Info Window” documentation that you referenced. Perhaps this is a difference in Versions.
However, the “Edit Library” feature that you highlighted does show under “Add Folders” the location of the Music folder that I was looking for.