Actually, looking through the swf files,

>package assets.adult
>{
> import flash.display.MovieClip;
> public dynamic class SceneAsset extends MovieClip
> {
> public var closeBtn:Asset_Close_Btn;
> public function SceneAsset()
> {
> super();
> }
> }
>}

I guess its just some flash underneath. Dunno how to actually use this, but we know whats in the file.