[oelmekki]

Regarding Spotify : I use its desktop client (an electron-like app, but using their own implementation of a browser, if I got this right), and it does properly work with Connect, as it implements the standard media player controls on desktop.

I have an android wear, this allows me to play/pause, next/previous track volume up/down spotify running on my desktop from my wrist, this is super cool (although to be fair, you can also do that with the spotify app on mobile, used to control spotify on desktop).

https://www.spotify.com/fr/download/linux/

[Vinnl]

Unfortunately you can't install tracking protection for their desktop app, so you'll have to mess with a Pi-Hole or modifying your hosts file or something...