Mutes audio at 21:00 and unmutes at 07:00, but only when the
idle-inhibit toggle is active (PID file exists). This is useful
for leaving the computer running overnight for SSH access while
keeping it quiet for sleeping.
Also to start it, for some reason it needs to be killed and
there needs to be a sleep, etc. to avoid some race conditions.
Therefor I added this weird shell script to start it.
