I'll try to explain this as clearly as possible: 1.) Click on real player media links on c-span.org, they work fine, but my real player is outdated. 2.) upgrade real player to newest version. 3.) now, when i click on the links on c-span.org (link for reference ), on ANY browser, it gives the error message dialog box saying "rtsp is not a registered protocol." any ideas on how to fix this?