можно так:

Код AS3:
package
{
import flash.display.MovieClip;
import flash.utils.setTimeout;
public class Example extends MovieClip
{
private var _quantity:int = 5;
public function Example()
{
var delay:Number = Math.ceil(1000 / stage.frameRate);
for (var i:int = 1; i <= _quantity; i++) {
var mc:Mc = new Mc();
mc.gotoAndStop(i);
setTimeout(stopClip, delay, mc, i);
mc.x = 100 * i;
mc.y = 200;
addChild(mc);
}
}
private function stopClip(mc:MovieClip, index:int):void
{
var clip:MovieClip = mc.getChildByName('symbol' + index) as MovieClip;
clip.stop();
}
}
}