dbus-send --dest='org.gnome.Rhythmbox' /org/gnome/Rhythmbox/Player org.gnome.Rhythmbox.Player.playPause boolean:true
celé tedy nějak takhle
rhythmbox & sleep 5 && dbus-send --dest='org.gnome.Rhythmbox' /org/gnome/Rhythmbox/Player org.gnome.Rhythmbox.Player.playPause boolean:true;