After testing some others extensions for showing a gallery sample from Flickr this is the only one I´ve got what I wanted using it with Rokbox. Very simple with the rss link. Fantastic, very, very good extension.
I tried the Lite version but need the pro version cause of special features. I got mad trying to migrate from Lite to Pro because they are built in different ways. They ask me to do the migration and I got the whole solution in less than 1 day. Fantastic.