When installing rygel through the command line method:http://live.gnome.org/Rygel/N900

I recieved no feedback because I stupidly installed it via the app manager first.... and because of my lack of reading skills the following catalogues have been added:

deb http://www.fatal.se/pub/ah-maemo-repo/ fremantle free non-free
deb-src http://www.fatal.se/pub/ah-maemo-repo/ fremantle free non-free
rygel

and now the app. manager gives me "operation failed" on launch. And "no applications installed" when selecting download or uninstall.

As I am a complete noob in the world of Linux and command lines I have no clue how to fix this..
maybe I can edit the catalogues save file to remove the 3 faulty lines??

thanks for your time,

G