Dynamics AX 4.0 - 3-tier Development

Excellent screen cast - everytime a colleague has to be introduced to AX development I show them this video
Well, I'm a Dynamics NAV developer who wanted to have an introduction to AX, unfortunately the video is no longer available
could you fix this ?
Freelance Dynamics NAV Consultant
Tarek Demiati
E-mail : tarek.demiati@gmail.com