I use SyncMe which synchronizes smb shares to your phone. It’s great once you have it set up, but it does take a little setup. Gotta have shares and whatnot.

I wrote my own rss reader for youtubue, so it does this digging for me when I paste in a channel link :)

Protip: Youtube channels have RSS feeds, they’re just buried in the source of the page. Ctrl-U and then Ctrl-F title=“RSS”