This is one of the protype MUTE BOXes I made 2-3 years ago. It's been at my desk working perfectly. Often times I will be listening to music or podcasts on my laptop, my laptop will go to sleep, and inevitably, during the song I would never want anyone to hear in a professional environment, someone will walk in. With the Mute Box all I have to do is hit the switch and it will instantly mute whatever I was listening to. No unlocking or fubling with lock screens while the person stares at me trying to figure me out. A good side benefit was that it also gave me a great way to manually mute free account music player commercials that came up. It was so handy I decided to make a more professional version and put it up for sale. Check it out the production version for sale here!