Original author: This is the method I use. The background music of horseback riding and slashing is in this folder. The music of each scene period corresponds to a music file. Open it and put it in it (you can use the player Listen to the file you want to change); find the scene music file you want to change. Then copy its original suffix, and then copy this suffix to the MP3 music file you want to change. Then put this MP3 file into the folder.