You could use ispring. The free version is here; http://www.ispringsolutions.com/free_powerpoint_to_flash_converter.html?ad=adw&c=aXNwcmluZ19nZW5lcmFs&gr=aXNwcmluZ19mcmVl&gclid=CJ-E0ezt0rMCFUWo4Aodn0oAOA
Its basically an attachment to powerpoint to turn the ppt to swf and it makes it own player(perfect for powerpoint games). The open office to swf doesn’t work very well because it doesn’t hold animations or sounds after converting sadly. :/
So ispring is the way to go for this.