I’m trying to set up a media player – on a synology box - and everything works fine but when I try to add media nothing appears. The media all exists, in a folder structure built from iTunes (which I’m trying to replace). I’m sure there is something blindingly obvious I’m missing but I can’t see it. Tried add all sorts of library types, from all levels in the directory structure and nothing helped.
Check file permissions. User plex needs at least read only permissions to the folder/subfolders/files of your iTunes library.
When you create your libraries, point them at the specific folder, not at just the iTunes Media folder. For example, point Movies at iTunes Media -> Movies; point TV Show library at iTunes Media -> TV Shows; etc. (adjust accordingly for your directory structure).