I've never looked what Wizard's disk contains, but I'd guess it just have some pd software for using middle mouse button for different task. You can get similar programs from Aminet or maybe exactly same programs too. I used MCP to make use of middle mouse button and combinations of mmb & other buttons. Some programs like some MUI classes use mmb without any external stuff too. For example you can scroll web pages with mmb pressed with IBrowse.
