Application sound control.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using  mb;


//private static extern int waveOutSetVolume(IntPtr hwo, uint dwVolume);

namespace SoundTestApp
{

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            mb.TaskScheduler.Instance.ScheduleTask(14, 21, 24, () =>
            {
                SetVolume(0);
            });

            mb.TaskScheduler.Instance.ScheduleTask(14, 23, 24, () => { SetVolume(10); });

        }

        private void button1_Click(object sender, EventArgs e)
        {
            Play();
        }
        private void Play()
        {
            string soundFile = @"D:\testFile.wav";
            var sound = new System.Media.SoundPlayer(soundFile);
            sound.PlayLooping();

        }

        private void button2_Click(object sender, EventArgs e)
        {
            Console.WriteLine("Click!");
            SetVolume(0);
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        [DllImport("winmm.dll")] private static extern int waveOutGetVolume(IntPtr hwo, out uint dwVolume);
        [DllImport("winmm.dll")] private static extern int waveOutSetVolume(IntPtr hwo, uint dwVolume);


        /// <summary>
        /// Returns volume from 0 to 10
        /// </summary>
        /// <returns>Volume from 0 to 10</returns>
        public static int GetVolume()
        {
            uint CurrVol = 0;
            waveOutGetVolume(IntPtr.Zero, out CurrVol);
            ushort CalcVol = (ushort)(CurrVol & 0x0000ffff);
            int volume = CalcVol / (ushort.MaxValue / 10);
            return volume;
        }

        /// <summary>
        /// Sets volume from 0 to 10
        /// </summary>
        /// <param name="volume">Volume from 0 to 10</param>
        public static void SetVolume(int volume)
        {
            int NewVolume = ((ushort.MaxValue / 10) * volume);
            uint NewVolumeAllChannels = (((uint)NewVolume & 0x0000ffff) | ((uint)NewVolume << 16));
            waveOutSetVolume(IntPtr.Zero, NewVolumeAllChannels);
        }

        private void button3_Click(object sender, EventArgs e)
        {
            SetVolume(10);
        }
    }
}