Eight sounds, one file.
8-bit-game-sounds.mp3 is loaded once. A sprite is nothing more than a start and an end time inside it, so one request gives a game all of its effects. Press a pad and watch the marker run through its region of the file. The file holds more sounds than the eight on the pads: find them on the display and cut sprites of your own.
loadSounds()setSoundSprite()playSprite()removeSpriteSound()