GameCube
Playing Horn Audio requires the player to press the play remote buttons in the following order: ̶0;R,̶1; ̶0;L,̶1; ̶1;R,̶1; ̶0;L̶1; and then the ̶0;Y̶1; button. This will play the Horn Audio noise.
Xbox
To play the horn sound on the Game Cube, press the remote buttons in the following order: ̶0;R,̶1; ̶0;L,̶1; ̶1;R,̶1; ̶0;L̶1; and then the ̶0;Y̶1; button. The owl hooting, dog barking or the sound of a horn will play.
Play Station 2
The method for playing Horn Audio on the PlayStation 2 is similar to playing on the GameCube, only there is no Y button. Instead, press ̶0;R,̶1; ̶0;L,̶1; ̶0;R,̶1; ̶0;L̶1; and then the ̶0;Triangle̶1; button.
Other Gaming Consoles
You can play Sims 2 on other gaming systems; however, you cannot be able to play the different audio affects using the Horn Audio cheats. This includes a PC, a Mac, a Wii and a Gameboy.