Right now there isn't a way to change the language. I believe the full game will though. Although it won't ship with anything except English.
I wouldn't translate anything quite yet. It's still in flux and I didn't even do my major localization pass until yesterday.
Depths of Peril, Kivi's Underworld, Din's Curse, Drox Operative, Zombasite, Din's Legacy, & Drox Operative 2