code: function(node) {
        var checkIE = /MSIE |Trident\//.test(Howler._navigator && Howler._navigator.userAgent);
        if (!checkIE) {
          node.src = 'data:audio/wav;base64,UklGRigAAABXQVZFZm10IBIAAAABAAEARKwAAIhYAQACABAAAABkYXRhAgAAAAEA';
        }
      }
docs: Set the source to a 0-second silence to stop any downloading (except in IE).
  @param  {Object} node Audio node to clear.