title: Stopping an AudioPlayer in a different ViewController
body: <p>I have a main menu sound file playing in an AVAudioPlayer. </p>
  
  <p>I wanted to create an option button that takes me to another view controller. When I click on the switch to have an option to turn the main menu sound "off". How can I stop the audio playing?</p>
  
  <p>How can I access the audio player in a different ViewController?</p>
  
  <p>Let me know if you need more info. Thanks!</p>