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function getJSONP(url, success) {
  var ud = '_' + +new Date;
  var script = document.createElement('script');
  var head = document.getElementsByTagName('head')[0] || document.documentElement;

  window[ud] = function (data) {
      head.removeChild(script);
      success && success(data);
  };

  script.src = url.replace('callback=?', 'callback=' + ud);
  head.appendChild(script);

}

getJSONP('http://soundcloud.com/oembed?url=http%3A//soundcloud.com/forss/flickermood&format=js&callback=?', function (data) {
    console.log(data);
});