void DumpFileAsync()
            {
                try
                {
                    string folder = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
                    folder = folder + Path.DirectorySeparatorChar + "firebwall";
                    folder = folder + Path.DirectorySeparatorChar + "modules" + Path.DirectorySeparatorChar;
                    folder = folder + Path.DirectorySeparatorChar + "SaveFlashVideo" + Path.DirectorySeparatorChar;
                    if (!Directory.Exists(folder + "temp"))
                    {
                        Directory.CreateDirectory(folder + "temp");
                    }
                    string extension = ".flv";
                    switch (Type)
                    {
                    case "video/vnd.avi":
                    case "video/avi":
                    case "video/masvideo":
                    case "video/x-msvideo":
                        extension = ".avi";
                        break;

                    case "video/x-mp4":
                        extension = ".mp4";
                        break;

                    case "audio/mp4":
                        extension = ".m4a";
                        break;

                    case "audio/mpeg":
                    case "audio/MPA":
                    case "audio/mpa-robust":
                        extension = ".mp3";
                        break;
                    }
                    tempFile = folder + "temp" + Path.DirectorySeparatorChar + DateTime.Now.Ticks.ToString() + "-" + ((uint)quad.GetHashCode()).ToString() + extension;
                    FileStream bin  = new FileStream(tempFile, FileMode.Append);
                    DateTime   last = DateTime.Now;
                    while (!done)
                    {
                        Thread.Sleep(10);
                        if ((DateTime.Now - last).TotalSeconds > 30)
                        {
                            break;
                        }
                        Queue <byte[]> dataQueue = swapQueue.DumpBuffer();
                        foreach (byte[] t in dataQueue)
                        {
                            last = DateTime.Now;
                            bin.Write(t, 0, t.Length);
                            written += (uint)t.Length;
                        }
                    }
                    Queue <byte[]> q = swapQueue.DumpBuffer();
                    foreach (byte[] t in q)
                    {
                        last = DateTime.Now;
                        bin.Write(t, 0, t.Length);
                        written += (uint)t.Length;
                    }
                    q = swapQueue.DumpBuffer();
                    foreach (byte[] t in q)
                    {
                        last = DateTime.Now;
                        bin.Write(t, 0, t.Length);
                        written += (uint)t.Length;
                    }
                    bin.Close();
                    if (outputFile == null)
                    {
                        outputFile = folder + GetMD5HashFromFile(tempFile) + extension;
                    }
                    File.Move(tempFile, outputFile);
                }
                catch { }
            }