How to use mini-media-player card with shortcuts, google music playlists and google home speakers (chromecast)?

I’m trying to figure out how to trigger specific playlists (from my google music library) to buttons using the mini-media-player card shortcuts functionality. Most of the documentation understandably focuses on sonos so I’m not sure if it’s even possible. If anyone has been able to do this, I’d appreciate it very much if you shared.
Also, accessing YouTube playlists would also be great!