from pydub import AudioSegment
from pydub.playback import play

audio1 = AudioSegment.from_file("zipper.wav")
audio2 = AudioSegment.from_file("jar.wav")
audio3 = AudioSegment.from_file("dribble.wav")

mixed = audio1.overlay(audio2)
mixed1  = mixed.overlay(audio3)

mixed1.export("mixed.wav", format='wav')

play(mixed1)