can someone pleas tell me why this doesnt work?

http://www.ardmediathek.de/ard/servlet/

this to

Unfortunately Adobe Flash is not supported in Couch Surfer Pro. Adobe Flash video can be viewed in Firefox.

After enabling Adobe Flash as described in the link below, Firefox can be installed through the Maintenance --> Install Extras menu, then launched through the nitoTV --> Applications menu.

http://wiki.atvflash.com/index.php?title=Enable_Flash

Note: A USB keyboard/mouse or Mobile Air Mouse app will be required to control Firefox.
http://wiki.atvflash.com/index.php?title=Mobile_Air_Mouse