The most "useful" post for this specific file is the official mod page on the community site:
: Right-click your game icon and select Open file location . Enable Mods : OldMusic.7z
: A similar "Old Music" mod exists for World of Tanks . If your file is for this game, it usually requires placing renamed .bnk or .pck files into the res_mods folder. The most "useful" post for this specific file