gistfile1.as

import flash.display.*;
import flash.net.URLRequest;

// esse codigo é um fork de <http://gist.github.com/22429> by @leandroferreira

var loaderzim:Loader = new Loader();
loaderzim.contentLoaderInfo.addEventListener( "complete", onLoaderzimComplete );
loaderzim.load(new URLRequest("arquivo.swf"));
addChild(loaderzim);
function onLoaderzimComplete( ev:Event ):void
{
    addChild( ev.target.loader );
}