Add language versions to all type of posts. It's free version with some limitations.
Rosetta renamed to Stella! Check out last version at http://wordpress.org/extend/plugins/stella-free/
Rosetta plugin for WordPress is designed to give the user a simple and effective way to build a multi-language website. It makes it possible to easily produce and manage multilingual content.
This free version of Rosetta plugin has some limitations.
Here is a quick overview of free version features:
Learn more about full version on http://store.theme.fm/plugins/rosetta/