broadcasr a vocal message in two external spécific sound card

Question

Hello everyone,
By calling this function in the main class of my project, it allows me to leave a voice message directly from a specific sound card ,  specifying the number of sound card where I want to broadcast my voice message. in parameter .
Now I have another problem: How can I read in two sound cards  at the same time.Is someone can help me please.
Here is my code:

using System;

using System.Windows.Forms;

using NAudio.Wave;

using System.Runtime.InteropServices;

using System.Data.Odbc;

namespace PaGa

{

    public partial class StreamingForm : Form

    {

       

        int device;

        string fileName;

       

        WaveOut wave = null;

        private NAudio.Wave.WaveFileReader waveReader = null;

        private NAudio.Wave.DirectSoundOut output = null;

        public StreamingForm(int device)

        {

            InitializeComponent();

            this.device = device;

        }

        public static int DeviceCount

        {

            get { return WaveNative.waveOutGetNumDevs(); }

        }

        private const string mmdll = "winmm.dll";

        [DllImport(mmdll)]

        public static extern int waveOutGetNumDevs();

        /// <summary>

        /// Clean up any resources being used.

        /// </summary>

        /// <summary>

        /// The main entry point for the application.

        /// </summary>

        //[STAThread]

        private PaGa.WaveOutPlayer m_Player;

        private PaGa.WaveInRecorder m_Recorder;

        private PaGa.FifoStream m_Fifo = new PaGa.FifoStream();

        private byte[] m_PlayBuffer;

        private byte[] m_RecBuffer;

        private void Filler(IntPtr data, int size)

        {

            if (m_PlayBuffer == null || m_PlayBuffer.Length < size)

                m_PlayBuffer = new byte[size];

            if (m_Fifo.Length >= size)

                m_Fifo.Read(m_PlayBuffer, 0, size);

            else

                for (int i = 0; i < m_PlayBuffer.Length; i++)

                    m_PlayBuffer[i] = 0;

            System.Runtime.InteropServices.Marshal.Copy(m_PlayBuffer, 0, data, size);

        }

        private void DataArrived(IntPtr data, int size)

        {

            if (m_RecBuffer == null || m_RecBuffer.Length < size)

                m_RecBuffer = new byte[size];

            System.Runtime.InteropServices.Marshal.Copy(data, m_RecBuffer, 0, size);

            m_Fifo.Write(m_RecBuffer, 0, m_RecBuffer.Length);

        }

        private void Stop()

        {

            if (m_Player != null)

                try

                {

                    m_Player.Dispose();

                }

                finally

                {

                    m_Player = null;

                }

            if (m_Recorder != null)

                try

                {

                    m_Recorder.Dispose();

                }

                finally

                {

                    m_Recorder = null;

                }

            m_Fifo.Flush(); // clear all pending data

        }

        private void Start()

        {

            //Stop();

            //try

            //{

            PaGa.WaveFormatStream fmt = new PaGa.WaveFormatStream(44100, 16, 2);

            m_Player = new PaGa.WaveOutPlayer(device, fmt, 16384, 3, new PaGa.BufferFillEventHandler(Filler));

            m_Player = new PaGa.WaveOutPlayer(device, fmt, 16384, 3, new PaGa.BufferFillEventHandler(Filler));

            m_Recorder = new PaGa.WaveInRecorder(-1, fmt, 16384, 3, new PaGa.BufferDoneEventHandler(DataArrived));

            // wave = new WaveOut();

            // stop previous sounds before starting

            //}

            //catch

            //{

            //Stop();

            //throw;

            //}

        }

        public void playChime(int device)

        {

            OdbcConnection cn = new OdbcConnection("DSN=cp1");

            cn.Open();

            OdbcCommand cmd1 = new OdbcCommand("select chemin from alarme where code_alarme=41", cn);

            cmd1.Connection = cn;

            fileName = cmd1.ExecuteScalar().ToString();

            wave = new WaveOut();

            disposeWave();

           // DisposeAll();  // stop previous sounds before starting

            waveReader = new NAudio.Wave.WaveFileReader(fileName);

            var waveOut = new NAudio.Wave.WaveOut();

            waveOut.DeviceNumber = device;

            var output = waveOut;

            output.Init(waveReader);

            output.Play();

        }

        public void disposeWave()

        {

            if (output != null)

            {

                if (output.PlaybackState == NAudio.Wave.PlaybackState.Playing)

                {

                    output.Stop();

                    output.Dispose();

                    output = null;

                }

            }

            if (wave != null)

            {

                wave.Dispose();

                wave = null;

            }

        }

        private void StreamingForm_Closing(object sender, System.ComponentModel.CancelEventArgs e)

        {

            Stop();

        }

        private void StartButton_Click(object sender, System.EventArgs e)

        {

         

            playChime(device);

            Start();

        }

        private void StopButton_Click(object sender, System.EventArgs e)

        {

            Stop();

        }

        private void bttnexit_Click(object sender, EventArgs e)

        {

            this.Close();

        }

    }

}

And thanks very much for your help.