function turnOn(musicFile) {
  var filename=musicFile.substr(0,musicFile.length-4);
  text='<embed src="mp3s/'+musicFile;
  text+='" width="200" height="16" autostart="true">';
  document.getElementById("player").innerHTML=text;
  filename = filename.replace(/-/g," ");
  document.getElementById("playerText").innerHTML="playing: "+filename.replace(/_/g," ");
}