codice:
onClipEvent (load) {
     fscommand("allowscale", "false");
     _root.stop();
     barra2._visible = false;
     testo1 = "Caricamento Movie";
     main = true;
}
onClipEvent (enterFrame) {
     if (main) {
          car = _root.getBytesLoaded();
          tot = _root.getBytesTotal();
          perc = parseInt((car/tot)*100);
          percent1 = perc+"%";
          barra1._xscale = perc;
               if (car == tot) {
               loadMovieNum("sfondo3b.swf", 1);
               main = false;
               Sound = true;
               barra2._visible = true;
               testo2 = "Caricamento Suoni";
          }
     }
     if (sound) {
          car = _level1.getBytesLoaded();
          tot = _level1.getBytesTotal();
          perc = parseInt((car/tot)*100);
          if (car != undefined) {
               percent2 = perc+"%";
               barra2._xscale = perc;
               if (car == tot) {
                    _level1.musica.start(0, 999);
                    _root.nextFrame();
                    testo1 = testo2 = "";
               }
          }
     }
}
prova così