Languages installation

I was in the process of installing the Ultimate Translate plugin – when I read in the forums that you would not be supporting it any longer. Is the Languages for WordPress still being supported? I am having installation issues with it. I moved all of the .mo files into a newly created folder called “languages” and then uploaded it to wp-content. The instructions say that it is not yet enabled, but does not say how to enable it. Is there no other file besides the “languages” folder? How does it become enabled? The instructions say to go to Network admin settings to select default language – but there is no options in the settings for this. Nothing shows up in plugins either? What am I missing?