[Orgmode] org-mode tutorial screencasts not accessible

[address@hidden]

Hi,

I hope this is the right place to send this query and get a
response.

The org tutorials page lists some screencasts.
2 screencasts do not seem to load at all. They are
  1) screencast for presenting a few features of plain lists 
     : http://lumiere.ens.fr/~guerry/org-playing-with-lists-screencast.php
  2) screencast for  Emacs Org's Column View 
     : http://www.cognition.ens.fr/~guerry/org-column-screencast.php

Are the links still valid?

Thanks,


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