I can’t look up a local version at the moment, but based on the github version, Line 119 restricts it to movies only.
I don’t know exactly how @tom80H altered it, but I’d suggest replacing if find_extras and type == 'movie' with if find_extras and (type == 'movie' or type == 'show')
(The other relevant types are season and episode)
That’s how I started out with this agent, but during testing I had some issues with it adding some videos that were outside my chosen media folder - so I’d suggest being very careful with your folder structure.