Here you go: http://www.ai-class.com/
They're still working out kinks in the site, and no homework is up yet, but the initial set of lectures (really really basic "what is AI/welcome to the first day of class" type stuff is up), so if you signed up, then sign in and hopefully the site will work for you.
Is it too late now?
I found out it's not even too late for the machine learning class so I signed up for it too. I'd read about Ng's work before and some of his projects, and I'm excited to take a class from him (not to mention Thrun and Norvig, of course).
Edit: I should add I was hesitant about taking both, which happen at the same time, but after seeing the first homework in the AI class, which was rather brief, I figured it would be manageable.