How to insert a sound file in a C# project

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Microsoft.DirectX.AudioVideoPlayback;
using System.Runtime.InteropServices;
using System.Media;
namespace alarmee
{
    public partial class Form1 : Form
    {
        public Audio Lecteur;
        public bool lecture = false;
       public Form1()
        {
            InitializeComponent();
        }
       [System.Runtime.InteropServices.DllImport("winmm.DLL", EntryPoint = "PlaySound", SetLastError = true, CharSet = CharSet.Unicode, ThrowOnUnmappableChar = true)]
       private static extern bool PlaySound(string szSound, System.IntPtr hMod, PlaySoundFlags flags);
       [System.Flags]
       public enum PlaySoundFlags : int
       {
           SND_SYNC = 0x0000,
           SND_ASYNC = 0x0001,
           SND_NODEFAULT = 0x0002,
           SND_LOOP = 0x0008,
           SND_NOSTOP = 0x0010,
           SND_NOWAIT = 0x00002000,
           SND_FILENAME = 0x00020000,
           SND_RESOURCE = 0x00040004
       }
        private void button4_Click(object sender, EventArgs e)
        {
        }
        System.Media.SoundPlayer sp = new SoundPlayer();
        private void button1_Click(object sender, EventArgs e)
        {
//Dans ton constructeur :
            sp.SoundLocation = "C:\\Sample\\alarme.wav";
sp.LoadCompleted += new AsyncCompletedEventHandler(sp_LoadCompleted);
sp.LoadAsync();
        }
    
//Puis
private void sp_LoadCompleted(object sender, AsyncCompletedEventArgs e)
{
   sp.PlayLooping();
}
}
}