Here are the links to some videos and mp3 audio files about accessibility in GNU/Linux (Debian/Ubuntu):

Configuring gnome-orca: *audio http://www.crespo.info.ve/tiflo/tutoriales/audio/orca.mp3 *video http://www.crespo.info.ve/tiflo/tutoriales/videos/orca.mpeg *youtube http://www.youtube.com/watch?v=HZV5KGpgpjo

Using the gnome desktop:

Using the calculator in gnome:

Using the firefox browser:

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