Thanks for sharing.
As a somewhat related thing that others might find useful, here are my shortcuts to get my Varmilo keyboard media keys working with useful functions instead of the default stuff. I’ve got these set up as custom shortcuts in KDE, but they should work in any context:
Next track
dbus-send --print-reply --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.Next
Previous track
dbus-send --print-reply --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.Previous
Play-pause toggle
dbus-send --print-reply --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.PlayPause
You can replace Spotify in the destination parameter with any MPRIS-capable program. To find out what’s available on the dbus and get the exact name, use this command:
dbus-send --session --dest=org.freedesktop.DBus --type=method_call --print-reply /org/freedesktop/DBus org.freedesktop.DBus.ListNames
I don’t understand the purpose of Spotify posting a complete work of fiction like this. There’s nothing random about their Shuffle setting, nothing at all. There’s a reason third-party sites that serve no other purpose than to shuffle Spotify playlists exist.