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.
I just tried, and the software player does seem to do a better job than the web player. It certainly sounds different. I don't have much trouble following Ng at 150% on the web player either, however, so it's hard for me to make a useful comparison.
I should say, though, that the machine learning videos don't seem to be loading fast enough on my connection for smooth sped-up streaming using the software. This makes the software pretty useless unless you pre-load the videos or are willing to put up with the frustration of intermittent buffering. I don't have this problem with the AI videos (or youtube videos in general).