Ive download a snes rom pack and at first i couldnt get the games to start. it seems that even after i unzipped the 7zip file the roms themselves where still 7zipped. so i unzipped them, but each rom folder has diffirent versions of the same game, and retroarch wont play the game unless is speficily choose a file each time. is there a way i can get launch box or retroarch to choose the US version of the roms?