Why won't my Original Movie DVD's not play on my computer? Intrepid 64bit KDE 4.2

[Steven Vollom]

>> ant.
>>
>> Try: sudo aptitude install libdvdcss2 (you'll need medibuntu
>> repositories. Check their site for instructions:
>> http://www.medibuntu.org/  ).
>>     
> sudo wget http://www.medibuntu.org/sources.list.d/intrepid.lis

> t --output-document=/etc/apt/sources.list.d/medibuntu.list 

> and got the following response:
[sudo] password for steven:
--2009-03-03 17:11:57--  
http://www.medibuntu.org/sources.lists.d/intrepid.liststeven@Ysshua:~$ 
sudo wget http://www.medibuntu.org/sources.lists.d/intrepid.list 
Resolving www.medibuntu.org... failed: Name or service not known.
wget: unable to resolve host address 'www.medibuntu.org'

Was this the command I was supposed to do?  I cut and pasted from the 
medibuntu site.

Steven