I just created a fork of this plugin that adds support for browsing
downloaded podcasts in your MusicBee library. This was my first time messing around with Visual Basic so my code is kinda sloppy, but it works. I decided to somewhat uncreatively name my fork UpnpReloaded.
The plugin can be downloaded here:
https://github.com/EliSadaka/UpnpReloaded/releasesNote that it only supports MusicBee 3.1 and later.
I don't see myself adding any more features since podcast support was really the last thing I needed, but the source code is available for anyone else to improve upon further. Depending on how easy it seems I might add support for browsing non-downloaded podcasts, but no promises.