(audioSource, audioCount) = soundFileSelect(audioFileIndex: 0)
    audioSource?.isPositional = true
    if vol {
        audioSource?.volume = 1.0
    }
    else {
        audioSource?.volume = 0.0
    }
    let audioPlayer = SCNAudioPlayer(source: audioSource!)
    geometryNode.addAudioPlayer(audioPlayer)
    let play = SCNAction.playAudio(audioSource!, waitForCompletion: true)
    let loopPlay = SCNAction.repeatForever(play)
    geometryNode.runAction(loopPlay)

audioPlayer.audioNode?.engine?.mainMixerNode.outputVolume=0