title: Win7: Get microphone mute status
body: <p>my main goal is to have a program, that allows me to mute/unmute my microphone under windows using the 'scroll lock' key. This would give me a nice indicator for whether the mic is muted or not because of the scroll lock light on my keyboard.</p>
  
  <p>How can I get information about the status of the microphone - whether it's muted or not?
  Any dll I could call to achieve this? </p>
  
  <p>Thanks</p>