BuddyPress.org

Hi everyone,
I am trying to change the url of my feed from http://www.trabalhonaitalia.com/activity/feed/ (impossible to read!) to http://feeds.feedburner.com/TrabalhonaitaliaActivity (easier to follow).
The question is: where is it? I can’t find the right place which contains the rss addresses.
It might be a silly question, but please help me!