Use own created objects

As with "Animated Screensaver Maker" I would very much like if the program had come with a tool that would allow users to edit own pictures/objects to include that part of user picture would be transparent when used in "Animated Wallpaper Maker 2.5.0".
E.g. So I could cut-out from a square picture like a picture of a fish and make my own non square object to use in "Animated Wallpaper Maker 2.5.0"