I just noticed that several folders of TV shows are not being updated with new episodes when I add them. There aren't any stuck tasks or anything like that so I'm not sure what the issue is. For example, I have as part of the Video library:

\Television
\American Horror Story
\Season 01
\Season 02
\Season 03

When I recently re-installed Mezzmo, Season 01 was complete, Season 02 was complete, Season 03 was at Episode 3. All of those show up on a DLNA player, and the thumbnails show on Mezzmo. But, since the re-install I have added Episodes 4-6 (just by copying them into the folder that is the "Television" folder from another machine) and those episodes do not show up at all on the DLNA player, and the thumbnails on Mezzmo are not the artwork, but just the standard icon.

So what am I doing wrong? Do I need to redo the entire library (which is about 8TB with 8,534 video files) each time I want other DLNA players to be able to see the new files added (which happens daily)?