The document describes the process of adding different sounds to a game made in Game Maker. It discusses adding a jump sound to play when the player jumps, an enemy death sound, background music, and menu sounds. For each sound, the author describes importing the audio file, assigning it to the appropriate event (such as jumping or button presses), and setting parameters like whether to loop. Testing is done after each addition to ensure sounds play correctly. The full process results in a game with sound effects, background music, and menu sounds all integrated through Game Maker's audio functionality.