Hi again...
Just tried that link again - works fine for me!
There's a triangle of videos (short, albeit) on it, in Flash format.
Maybe your PC isn't "Flash Player" enabled?
(Free from
http://get.adobe.com/flashplayer/)
Update on earlier post - issue 52 just arrived, with new earth cog and proper power supply. Both look OK.
Only reference to speed calibration seems to be a trial and error job - hours of fun!
There's also an "assembly hints and tips" section, which is nice way of saying how to rectify things that you might have cocked-up en route.
Unfortunately, no replacement motor or other spares already ordered....sigh.