I guess I can go into detail...

The media server is a modified copy of Red5, which is an open source Flash server. It was using an older release until now. Dolphin does not use an unmodified Red5 installation.

If your hosting provider offers media server service with their hosting packages, you'll have to talk to them for more information on availability of the new version. If you are on a VPS or dedicated server, you can update your media server to the latest version on your own. If you don't see more currently have the media server installed, you can also install it yourself if you're on these two server types.