Hi,
Thanks for letting us know. We've just been re-designing our "About NED" page. Looks like the link for NED for Windows has been broken.
In the meantime you can view any purchased tutorial online in our NEDweb player by clicking on the "Watch Tutorials" button on the top right of the page. Please log-in first.
Thanks for letting us know...
Do contact our Support team:
http://www.macprovideo.com/support/
Who may be able to direct to a link for NED for Windows more quickly.
Thanks
Rounik