wantsMainAudio.js

var pauseId;

// What the existing players c
window.permitMainAudio = function(event) {
  if (!player.isPlaying()) {
    return true;
  }

  // event.location is info from source, ie YouTube
  if (event.source == 'video') {
    player.pause();
    pauseId = event.requestId;
    return true;
  }
  
  return false;
}

window.releaseMainAudio = function(event) {
  if (event.requestId == pauseId) {
    player.play();
  }
}