I have Limewire Pro 4.12.3
 
1. Go under View and pick the last option to change the language  
 
 
(Sorry the image is so small 

 View is the second column header on the top, after File) 
2. Right-click on the world (or click on the flag if it's visible) and pick the second option to show language status, then click on the flag  
 
 
Good Luck 
 
  
Dano