Request for mute command

[Swipe650]

Would it be possible to add a mute command rather than me having to set the volume to 0? I see if a device is muted in the home app it will show the volume using the status command suffixed by "muted". Could the volume command be adjusted to allow it to be muted and retain the existing volume level?

I use your go-cast binary in a bash script to mute the volume when the radio commercials play. I have a work around by getting current volume level before setting it to zero and then setting it back to the previous level but it's very messy.