Если правильно понял...

Код AS3:
stop();
this.loaderInfo.addEventListener(ProgressEvent.PROGRESS, onProgress);
this.loaderInfo.addEventListener(Event.COMPLETE, onComplete);
function onProgress(e:ProgressEvent):void
{
var loaded:Number = e.target.bytesLoaded;
var total:Number = e.target.bytesTotal;
var pct:Number = loaded/total;
loader_mc.scaleX = pct;
loaded_txt.text = " " + (Math.round(pct * 100)) + "%";
}
function onComplete(e:Event):void
{
play();
addEventListener(Event.ENTER_FRAME, looper);
}
============================================
function looper(e:Event):void
{
if (currentFrame == 5)
{
stop();
removeEventListener(Event.ENTER_FRAME, looper);
}
}