This one has been asked for a million times by you guys and we've finally come through. I think in a pretty awesome way.
The new translations area of our site provides a way for you to share translations of WPMU DEV plugins and themes as well as an easy way to keep your translations up-to-date.
The system allows current members to approve and make changes to existing translations, create and import new language sets, and export language files that are properly named and ready to drop into our plugins/themes.
Visit it now and share any of your own translations! We've setup all our products in there, and added any existing translations we could find to help get you started. Enjoy!