Um, sir, that’s not possible, unless you can make GBA games yourself (but that’s almost impossible). GBA is an emulator, and it doesn’t have files like directories, so it’s Cannot be changed. . . Stop asking questions and give up. It can't be changed. . . If you have ever seen someone change it, it is just to remove the background music of GBA and then play the music you like to listen to. . .

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