Brodcast a direct vocal message in two specific external sound card in c#

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C#

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.