I published this model to illustrate some differences between the way that Shape and Real Player display transparent PNG textures.

For example, the trees in the Red and Blue cubes appear to have opaque (white) pixels around their edges.  In Shape the same edges are soft and blend smoothly with the background.  Another example is the tree on the top face of the cube.  In Shape, the blue background is transparent.  In Real Player, the same blue background is opaque.