That video is over 5 years old. I still have the sander and use it all the time. Still have not mastered the wonder wheel but is still on the do do list.
I did not realize that the video was cut short. We have had a number of web masters and what is missing is where I got the flex sander in Canada. I think it was cut short as at that time we had a discount set up for the club and that was only for club members.
In Canada the flex discs are available at
http://store.workshopsupply.com/catalogue/intarsia-tools-c-1641_2127.html. They don't seem to carry the wonder wheel anymore. Judy has changed the design a couple of years ago so it would have to be order from her.
I do have a flex shaft that I do use from time to time. I have a chuck that currently is on an old motor and drive a max mop. (greatest sander in my shop). I have switch to my sanding station if I need to sand slower.
The chuck came from Stockroom supply and the flex shaft from sawbird. I don't see either on their web sites. I used originally with Inflatable Kirjes-Guinevere Sanding Drum for bowls. Too cheap to buy the complete kit with motor etc.
I see they sell the flex shaft but expensive at over $100. I think I paid less than $50 but that was 5 years ago. I am not sure where to get chuck.
Here is a picture on the shaft just sitting there.
Need any more info give me shout.