Beeper which runs over Matrix (with bridges) has been pretty good and straightforward.

It’s setup like a chat app rather than a slack/discord lookalike so its easier for usual folks to get used to.

Fun fact: VLC still supports Android 4.2 (Nov, 2012) which i use to play local media on my old tablet(4.4) through f-droid. Works well with old formats.

On PC, I use MPV because I’ve gotten used to its command line and shortcuts.