I would like to mute my Rasberry Pi during the night (via crontab, I use the analog output). Yet it seems "amixer set PCM mute" doesn't work (properly). Actually "amixer set PCM unmute" mutes audio output. But not reliably; when playing an audiostream with mplayer muting works but unmuting (with "mute") doesn't.
Also, when muting works, I still get a click when (trying) to play audio.
I use the latest firmware.