nircmd.exe needs to be in the same folder
hotkeys:
ctrl+Numpad1 : mute desktop 1
ctrl+Numpad2 : mute desktop 2
ctrl+Numpad3 : mute desktop 3
win+Numpad1 : unmute desktop 1
win+Numpad2 : unmute desktop 2
win+Numpad3 : unmute desktop 3
win+alt+m : Mute All But Current Desktop
win+alt+u : UnmuteAll
f3 : exitApp
you can comment this line like this (to not exitApp when you press f3)
; f3::Exitapp