This one worked for me:

http://p.events-delivery.apple.com.edgesuite.net/1509pijnedf...

Updated VLC link:

http://p.events-delivery.apple.com.edgesuite.net/1509pijnedf...

10am PDT, 1pm east coast http://www.apple.com/apple-events/september-2015/

You can also paste this into Quicktime player (command + L, then paste)

No luck for me.