Jukebox for Zero mission. Shoot the button to cycle through music. Leave the directory set up as in upon extraction, and apply only the "jukebox.asm" file. The default sprite it replaces id 0x6C. Be sure to place a solid block where the button is as well, unless you want players to have the ability to clip through it. The AI is set up in a way that easily allows the user to choose what songs will and will not play. You can find these song values in "ByteTable" in the ai.asm file.