So… I created a new folder “123” under shared folder “media” and moved one movie into that folder. Rescanned the library and that movie in “123” appeared, but no movies from my “movies” folder. So there is something amiss with my “movies” folder.
With that, I renamed “movies” to “movies1” and created a new “movies” folder under media. That new one works.
I don’t know what happened, but that is a workable solution, unless you have something else in mind.