Loading Theme Text Domain

Using Genesis Framework, I noticed that many elements of the my theme weren’t being translated. So I obtained the relevant .mo file and stuck it in my theme’s root directory, but I don’t know how to get the .mo file “loaded” by Polylang.

I imagine it would have something to do with applying the load_theme_textdomain function, in functions.php, but after that I’m lost. I’ve been struggling with this for a while, so any thoughts would be appreciated.

http://ww.wp.xz.cn/extend/plugins/polylang/