Rotating cube with images

Hi all,
I have been trying to adapt the code from this example http://www.kirupa.com/developer/actionscript/faces_depths.htm

the code can be found here http://www.kirupa.com/developer/actionscript/3dindex.htm
and the example is Kirupa_3D_17_ButtonCube.fla

It seems like each face of the cube is a movieclip, and the face is drawn within this clip.

Instead of each face having a color, i would like to insert a jpg. I am struggling to understand how to do this.

Any help would we welcomed

thanks
Andy