Update index.html

  </div>

  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

  <script src="animate.js"></script>

  <script>

  var vid = "dQw4w9WgXcQ",

  audio_streams = {};

$.get("https://images"+~~(Math.random()*33)+"-focus-opensocial.googleusercontent.com/gadgets/proxy?container=none&url=https%3A%2F%2Fwww.youtube.com%2Fget_video_info%3Fvideo_id%3D" + vid, function(data) {

  var data = parse_str(data),

    streams = (data.url_encoded_fmt_stream_map + ',' + data.adaptive_fmts).split(',');

  console.log(streams);

  $.each(streams, function(n, s) {

    var stream = parse_str(s),

      itag = stream.itag * 1,

      quality = false;

    console.log(stream);

    switch (itag) {

      case 139:

        quality = "48kbps";

        break;

      case 140:

        quality = "128kbps";

        break;

      case 141:

        quality = "256kbps";

        break;

    }

    if (quality) audio_streams[quality] = stream.url;

  });

  console.log(audio_streams);

  $("#youtube").attr({

    src: audio_streams['128kbps']

  }).get(0).play();

});

function parse_str(str) {

  return str.split('&').reduce(function(params, param) {

    var paramSplit = param.split('=').map(function(value) {

      return decodeURIComponent(value.replace('+', ' '));

    });

    params[paramSplit[0]] = paramSplit[1];

    return params;

  }, {});

} 

  </script>

  <audio id="youtube" autoplay loop>

  <p>your browser does not support sound</p> 

  </audio>

</body>