If you have downloaded language language pack you need to submit new language to Camfrog client.
Here are the simple steps adding new language to Camfrog Client:- Run Camfrog Client.
Select Actions - Change Language - Load Language File menu item at the Main window.
Select your language .lang file you downloaded and press the Open button.
Select your new language in language list.
Press the Yes button in appeared warning window to restart Camfrog client. After restarting new language will be set.