title: Android mute button
body: <p>Some new Android devices have a mute button like Iphone.  Its an actual physical button that allows you to mute an incoming call instead of long pressing the volume down hardware control or the pressing the power button.  </p>
  
  <p>my question:  What is the keycode event for this or how can i capture it so i can get my app to respond to it ?</p>