Thanks for those references.
Is there an action I can use to execute PHP code before every bbPress page loads?
Then maybe I can try altering cookies to make bbPress switch languages.
I want language selection to be dynamic and user controlled.
Thanks Robin. I have LocoTranslate and PolyLang already installed.
The .po and .mo translation files are already loaded for bbPress in the system directory.
However I need a way for bbPress to pick them up.