Using Premium News theme in Spanish

Hello there!

I have installed the Premium News theme by Woo Themes. It’s supposed to be available in Spanish, and I was actually able to find the .po and .mo files for various languages. My problem is, I can’t find the way to change the language from english to any of the others so the website for users (not the administration area) shows up translated.

Does anyone now how to do it?

Thanks a lot!