Simple media controller plasmoid that fits into a panel and shows the currently playing song and artist.
It is based on the original Media Controller Plasmoid and thus supports the same players.
If changing the volume does not work, try to use the following command:
pactl set-sink-volume 0 +10%
Where 0 stands for the audio output. You can list the cards with:
pactl list | grep '^Sink #' -A2