We are creating templates to accommodate each of these powerful programs, and there is a plugin available from a third party site if you are in need of compatibility solutions frequently. The plugin is called flip4mac, and although it is not free ($30) it is an option if you need to work between the various platforms running Microsoft PowerPoint. The link for flip4mac download is: http://download.cnet.com/Flip4Mac-WMV-Player/3000-13632_4-87679.html . However, the most economical solution for this compatibility at this time is to continue using supported platforms for both creation and presentation of the PowerPoint presentations.