Comment 73 for bug 595896

You are correct Lin: with the option "enable=0", the mute button mutes and un-mutes the internal speakers correctly, and the mute LED is correctly switched on and off respectively. Yet, nothing happens on the audio jack output (the green one to be used with a headphone for instance, or to connect to a Hifi sound system) and the sound keeps on being output, i.e. the mute button mutes the internal speakers only without any effect on the audio output jack. Hope this clarifies.