SetMuted
output->SetMuted(static_cast<const int32 *>(value)[0]);
void SetMuted(bool yesno);
output->SetMuted(fOutputSetting.FindBool("OutputIsMuted"));
fControls->SetMuted(muted);
fVolumeSlider->SetMuted(mute);
fVolumeSlider->SetMuted(!fVolumeSlider->IsMuted());
void SetMuted(bool mute);
void SetMuted(bool mute);