In response to your problem, the HTTrack website copier is not designed for
downloading this type of website.

The reason being is that the website contains a large number of embedded flash
videos. These videos cannot be downloaded in a web browser 'manually'
so you cannot expect HTTrack to do this either.

It is possible to rip all of the video files and the PDF files using another
piece of software. You can contact me via email with regard to doing this.

If you can make a list of the videos you want, I can try uploading them to my
website for a short while. Hope this helps.
My website is >>http://110mb-hosting-007500.110mb.com/<<