so uhh I was trying to make a media player for my first project in C#.NET (my biggest mistake)
after like straight 7 hours of stealing peoples code from other answers in other questions I just had a problem that i can’t find out how to fix it… so annoying
and I guess I know the problem but I don’t know how to fix it…

the problem is when i press the btn that starts the sound/music … it works fine but it doesn’t stop the goddam sound and starts a new music instead… any help plkz? PLKZ? PPPLLLKKKZZZ?
I’m working on this problem for straight 11:30 hours plkz help me ;^;

(I hope I didn’t made any mistake in learning the C# when I’m only 14 years old and jumping from JS and PHP to C# anyway it doesn’t matter I’m in this now ????)

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using static System.Windows.Forms.VisualStyles.VisualStyleElement;
using System.Media;
using NAudio.Wave;
using TagLib;
using System.IO;
using WindowsFormsApp1.Properties;


namespace WindowsFormsApp1
{
    public partial class Form1 : Form
    {
        int playing = 0;
        public Form1()
        {
            InitializeComponent();
            this.AllowDrop = true;
            this.DragEnter += new DragEventHandler(Form1_DragEnter);
            this.DragDrop += new DragEventHandler(Form1_DragDrop);
        } 

        public static class GlobalFilePath
        {
            public static string FilePath { get; set; }

        }

        

        public void ReadMp3Metadata(string mp3FilePath)
        {
            // Open the MP3 file
            var mp3File = TagLib.File.Create(mp3FilePath);

            // Read the title (name) of the song
            string title = Path.GetFileNameWithoutExtension(mp3FilePath);
            label1.Text = title;

            // Check if there are any pictures
            if (mp3File.Tag.Pictures.Length > 0)
            {
                // Get the first embedded picture
                IPicture pic = mp3File.Tag.Pictures[0];

                // Extract image data (byte array)
                byte[] imageData = pic.Data.Data;
                // You can convert it to an Image object if needed
                Image albumArt = Image.FromStream(new MemoryStream(imageData));
                pictureBox2.BackgroundImage = albumArt;
            }


            // Don't forget to dispose the file to free resources
            mp3File.Dispose();
        }

        void Form1_DragEnter(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.FileDrop))
                e.Effect = DragDropEffects.Copy;
        }

        void Form1_DragDrop(object sender, DragEventArgs e)
        {
            string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);
            if (files != null && files.Length > 0)
            {
                // Store the first file path globally
                GlobalFilePath.FilePath = files[0];
                ReadMp3Metadata(GlobalFilePath.FilePath);
            }
        }


        private void button2_Click(object sender, EventArgs e)
        {
        string path = GlobalFilePath.FilePath;
        if (path != null)
            {
                var mp3Reader = (Mp3FileReader)null;
                var waveOut = (WaveOut)null;
                ReadMp3Metadata(path);
                if (playing == 0)           
                {
                    waveOut.Play();
                    playing = 2;
                    Console.WriteLine(playing);
                } 
                else if(playing == 1)
                {
                    waveOut.Stop(); 
                    playing = 1;
                    Console.WriteLine(playing);
                }
            }
        }

I tried many things many methods many other ways but non of them work
like making lot of class and functions
but still no no work