well, I decided to move my secondary computer  into the living room and just run xmbc as a program (bummer). So I go to a terminal and: 

~$ sudo apt-get install xbmc
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package xbmc

so update my apt database but that doesn't help any. Then I do a little web searching and find that apt-get is the way I should do it. I found the '=Installing_XBMC_for_Linux#Ubuntu_2' page and it implies that xmbc id in the official ubuntu repository so apt should do it. 

So please, what am I doing wrong?

:-)~MIKE~(-: