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Hi everyone, I am currently trying to use the SKAudioNode .isPositional property in order to have a positional audio feedback for the nodes audio source. While this is easy to accomplish just loading in a file as SKAudioNode source, I am having a hard time doing so when I am buffering the audio via an AVAudioPlayerNode. In general the setup is working to load and play audio, but I am not sure if I correctly setup the EnvironmentNode in order to use the .isPositional property. Any thoughts and help is highly appreciated, here is my code: class GameScene: SKScene { var audioFilePlayer = AVAudioPlayerNode()     var envNode: AVAudioEnvironmentNode!;     var bufferFormat = AVAudioPCMBuffer() override func didMove(to view: SKView) {  let player = SKSpriteNode(imageNamed: "player")         player.position =  CGPoint(x:0,y:0)         scene?.addChild(player)                      guard let filePath = Bundle.main.path(forResource: "bass2", ofType: "m4a") else{ return }         let fileURL = URL(fileURLWithPath: filePath)         var backgroundMusic = SKAudioNode()         player.addChild(backgroundMusic)         do {             let audioFile = try AVAudioFile(forReading: fileURL)             let audioFormat = audioFile.processingFormat             let audioFrameCount = UInt32(audioFile.length)             guard let audioFileBuffer = AVAudioPCMBuffer(pcmFormat: audioFormat, frameCapacity: audioFrameCount) else { return }             try audioFile.read(into: audioFileBuffer)             // connect the nodes, and use the data to play             let mainMixer = audioEngine.mainMixerNode             backgroundMusic.avAudioNode = audioFilePlayer             envNode = AVAudioEnvironmentNode();             self.audioEngine.attach(envNode);             scene?.audioEngine.attach(backgroundMusic.avAudioNode!)             scene!.audioEngine.connect(backgroundMusic.avAudioNode!, to: envNode, format: audioFileBuffer.format)             scene!.audioEngine.connect(envNode, to: mainMixer, format: audioFileBuffer.format)                      try scene?.audioEngine.start()             audioFilePlayer.play()             audioFilePlayer.scheduleBuffer(audioFileBuffer, completionHandler: nil)                      } catch {             print(error)         }         backgroundMusic.position = CGPoint(x:0,y:0)         label?.addChild(backgroundMusic)     }