Link to updated Time Travel with Windows Media Center article
A while back, Stephen wrote an article that explained how to develop an application for Windows XP Media Center Edition to allow users to jump to specific time codes in the media that is currently playing. Recently, he published an updated version of this article with information about how to create an equivalent application in Windows Vista Media Center. You can check out the article, titled Time Travel with Windows Media Center in Windows Vista at http://msdn2.microsoft.com/en-us/library/bb643809.aspx.
There are some changes to the Media Center extensibility platform between Windows XP Media Center Edition and Windows Vista, so even if you've looked at the article and source code in the past, I encourage you to take another look at the article to learn more about some advanced tricks for developing applications for Windows Vista Media Center.