Sure! The link you want is http://www.ispringsolutions.com/ - the free version. There is a paid version that advertises a lot of bells & whistles - but the free one seems to serve the purpose for me. (I'm the webmaster for the website for our local congregation, and needed something that would provide more universal access to the sermons and class material that is provided on the site. I know I'm a woman - but what I do is done with the full support and authorization of the men; and screened by my husband first before anything is posted.) File conversion is not completely intuitive for the user - but I didn't find it hard to figure out.
If you want to take a look at something I've already converted, you can find it at http://www.bradfordvillechurchofchrist.com/Flash/H eWhoThinks/HeWhoThinks.swf. The transitions from one slide to the next and one bullet to the next are not completely in sync with the audio - but that's my fault and due to an issue with the original PP presentation.