soundcloud

1) inject api script from js.js

 (function(){
   var elem = document.createElement('script');
   elem.src = "https://w.soundcloud.com/player/api.js";
   elem.type = "text/javascript";
   var scpt = document.getElementsByTagName('script')[0];
   scpt.parentNode.insertBefore(elem,scpt);
 }());

2) SC widget bindings.js

(function(){
  var widgetIframe = document.querySelector('iframe[src*="api.soundcloud.com"]')
  var widget = SC.Widget(widgetIframe);
	
  widget.bind(SC.Widget.Events.READY, function() {
    widget.bind(SC.Widget.Events.PLAY, function() {
      widget.getCurrentSound(function(currentSound) {
        console.log('sound ' + currentSound.get('') + 'began to play');
      });
    });
  });
}());