Logitech Media Server Scanner Stops Finding New iTunes Playlists

My Logitech Media Server (aka Squeezebox Server or LMS) stopped finding new iTunes playlists at some point and I couldn’t figure out why.  After updating, rescanning, resetting, etc., I was still in the dark.  It would find and add new songs, but not new playlists. Here’s what happened: iTunes switched at some point from using the ...