hi all been working on new things for game been playing with F1 so this help me understand more about files so work new things, please unpack to your game, if have not unpack the NEFS file then will not get folder called GAME but if u have in there should folder called AUDIO this were put these files. so no unpack got make new folder so be ?iRT Rally 2 0/game/audio if got installed in steam you have find it. so many new effect enable you wounder why so many files i play around these for years work out which work and don't work a lot years work here. i hope put these in dirt 5 it sound so sick or install in F1 games as no good effects in game. hope you all enjoy them. there is read me. thanks all.