Open media formats for Unitarian Universalists

Are there any Unitarian Universalists -- or keen open codec advocates who read this blog -- who use Ogg Vorbis (audio) or Ogg Theora (video) to play, share, stream or store media? These are free and open-source media formats.

I may have a project.

In related news, I bought a refurb digital audio player ("MP3 player") that supports Ogg and am enjoying it much. Of course, it takes a bit of work with Linux, but I hope to tell all once I have a successful workflow.