[Embed(source="library.swf")]

                private var Library:Class;

[Embed(source="library.swf", symbol="mySymbol")]

private var MySymbol:Class;

[Embed(source="library.swf")]

private var Library:Class;

private function getLib():void

{

        var libLoader:Loader = new Library().getChildAt(0);

        libLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, onLibComplete);

}

 

private function onLibComplete(evnt:Event):void 

{

        evnt.target.removeEventListener(Event.COMPLETE, onLinComplete);

        var symbolClass:Class = LoaderInfo(evnt.target).applicationDomain.getDefinition("SymbolClass") as Class;

        trace( "symbolClass : " + symbolClass );

}