TheAppleBlog

I recently hooked up an Airport Express with speakers connected so that I could stream music to it from any of my computers. When I purchased it, I didn’t realize that by default OS X only lets you stream music from iTunes to it, not any application. I wanted to stream music over [...]

Only a small number of people were invited to “The Beat Goes On” keynote but Apple has quickly made the entire keynote available for streaming here.
The full video is about 1 hour and 30 minutes long and covers everything from the intro of Steve Jobs to the ending with KT Tunstall playing.