How to create different URL for each CCK content type?

I want to create a different url for each CCK content type instead of the default which is:

content/----
content/----
content/----

I want:

news/----
actor/----
studio/----

to reflect each content type I've created with CCK.

So, I installed pathauto and it seems like this should do the trick under:

site building -> URL aliases -> Automated alias settings -> node path settings

but whatever I change there nothing happens/updates.

Am I missing something very simple here?

cheers!