The web pages for Lemmy and kbin have the ability to filter by subscribed communities, as well. I think what most of us are thinking of is a way to view the “All” feed that gives more weight to the smaller communities, which would help us discover new communities to subscribe to.
Thanks for the reminder about VLC. I don’t use it much any more, but back in the wild west days of audio/video codecs (some of which were paid), VLC would play everything.