maya_audio_editor

wave_path = "C:/Users/tonyy/Documents/horn.wav"
audio_node = cmds.createNode('audio')
wave_open = wave.open(wave_path)
frames = wave_open.getnframes()
rate = wave_open.getframerate()
duration = frames / float(rate)
wave_open.close()

cmds.setAttr(audio_node+'.filename',wave_path,type='string')
cmds.setAttr(audio_node+'.filename',wave_path)