M&S Sochi 2014 .bfsar file

Hi. I'm trying to open the .bfsar file contained in data\content\sound\urals_common. However, I can't seem to find out how to extract them properly. I've tried every guide there is online, so there's no need to say "LOL JUST GOOGLE IT )))" when I've probably already tried that one. Please, someone help me to extract these properly