gsettings set com.canonical.indicators.sound blacklisted-media-players "['rhythmbox']"
GLib-GIO-ERROR **: Settings schema 'com.canonical.indicators.sound' is not installed
aborting...
gsettings set com.canonical. indicators. sound blacklisted- media-players "['rhythmbox']"
GLib-GIO-ERROR **: Settings schema 'com.canonical. indicators. sound' is not installed
aborting...