if the game supports custom soundtracks (like some of the golf games and things) yes.. if the game doesn't.. then you.. I mean YOU will not be able to do it.. because YOU are not a game writer/coder ..
ty varnull for ur reply i did it to ford raceing 3 by making a folder of the game then finding the music folder and replacing the games music files i also kept the names of the games music the same so the music i replaced them with i renamed them to what the original files use to be also made my files to the same type of file think those 2 things mattered i burn it popped it in n got to the main screen n my music started playin instead of the games