SpamSparx.js

var urlList = [
  "http://www.audiosparx.com/sa/archive/Keyboard/Piano-electric/Ambush-Piano-Loop/534060",
  "http://www.audiosparx.com/sa/archive/Jazz/Jazz-Funk/Ambush-Short/534117"
];

function playSong() {
  url = urlList.pop()
  var aWin = open(url);
  var time = ""
  var total_time = 0

  function closeAWin() {
    aWin.close()
  }

  function getTime() {
    time = $(aWin.$("span.pfont8").get(1)).text().split(":")
    total_time = time[0]*60;
    total_time += time[1]*1;
    total_time = total_time*1000;
    total_time -= 3000;

    setTimeout( closeAWin, total_time );
    setTimeout( playSong, total_time );
  }

  setTimeout( getTime, 3000 );
}

urlList.reverse()
playSong()