l.content is a ContentDisplay object that extends Sprite - meaning it's a sprite with some extra properties and methods. It is what greensock loaders use as a container it loads. You can use it and manipulate it just like a regular display object on screen (x, y, scaleX, scaleY, rotation, alpha, width, height, etc etc).
Also you can pretty much forget about the loaders and LoaderMax once they've done their job loading your images. See it this way, loaders are just responsible for loading and LoaderMax is just a queue of loaders. They are useful to use to organize and get information for the loading process. You can learn more about each class at http://www.greensock.com/as/docs/tween/ under the com.greensock.loading packages.
hope this helps somewhat... also didn't see a need for that new thread~