the5fire

                 SpeechVoiceSpeakFlags spFlags = SpeechVoiceSpeakFlags.SVSFlagsAsync;
                 SpVoice sp = new SpVoice();
                SaveFileDialog sfd = new SaveFileDialog();
                sfd.Filter = "All files (*.*)|*.*|wav files (*.wav)|*.wav";
                sfd.Title = "Save to a wave file";
                sfd.FilterIndex = 2;
                sfd.RestoreDirectory = true;
                if (sfd.ShowDialog() == DialogResult.OK)
                {
                    SpFileStream spFileStream = new SpFileStream();
                    spFileStream.Open(sfd.FileName, SpeechStreamFileMode.SSFMCreateForWrite, false);
                    sp.AudioOutputStream = spFileStream;
                    sp.Speak(rtbContent.Text, spFlags);
                    sp.WaitUntilDone(System.Threading.Timeout.Infinite);
                    spFileStream.Close();
                }