This is from a talk I gave in 2007, about the widget system and other developer APIs for Joost. It is now very out of date, Joost has an exciting new Web-based video player instead. I think the widget stuff was ahead of its time, even if moving to a Web player made sense. So I wanted to keep a record of what was built before memories fade completely :)
For a more recent Joost dev demo, see http://www.beaufour.dk/blog/2008/12/christmas-is-ge.html for an example of embedding the new Flash player.