ModelViewer.Sound.SoundManager.Play C# (CSharp) Method

        public void Play(IPlayable wave)
        {
            lock (mutex)
            {
                if (wave == current)
                {
                    if (isPaused)
                    {
                        sourceVoice.Start();
                        isPaused = false;
                        return;
                    }
                }

                DisposeWave();
                xaudio.CommitChanges();
                isPaused = false;
                current = wave;
                currentStream = wave as IPlayableStream;

                if (decodeThread != null)
                {
                    System.Threading.Monitor.Pulse(mutex);
                    decodeThread = null;
                }

                if (currentStream == null)
                {
                    sourceVoice = new SourceVoice(xaudio, wave.WaveFormat);
                    dataStream = new SlimDX.DataStream(wave.WaveData, true, false);

                    audioBuffer = new SlimDX.XAudio2.AudioBuffer();
                    audioBuffer.AudioData = dataStream;
                    audioBuffer.AudioBytes = wave.WaveData.Length;
                    audioBuffer.Flags = BufferFlags.EndOfStream;

                    sourceVoice.SubmitSourceBuffer(audioBuffer);
                    sourceVoice.Start();
                }
                else
                {
                    streamLength = currentStream.StreamLength;
                    streamBuffered = 0;

                    sourceVoice = new SourceVoice(xaudio, wave.WaveFormat);
                    sourceVoice.BufferEnd += bufferEndCallback;

                    // Fill buffers initially
                    bool isDone = false;
                    for (var i = 0; i < NumStreamingBuffers; i++)
                    {
                        isDone = FillBuffer(i, currentStream);
                        if (isDone)
                        {
                            break;
                        }
                    }

                    sourceVoice.Start();
                    if (!isDone)
                    {
                        System.Threading.ParameterizedThreadStart threadProc = DecoderThread;
                        decodeThread = new System.Threading.Thread(threadProc);
                        decodeThread.Name = "Vorbis Decoder Thread";
                        decodeThread.Start(currentStream);
                    }
                }
            }
        }