Fanatic Live: [C#] MSN DP changer based on WA current song - Fanatic Live

private void mainThread()
 {
     int WinampWindow;
     int WinampStatus;
     int OldSongPosition;
     int i;

     MessengerAPI.MessengerClass MSN = new MessengerAPI.MessengerClass();

     try
     {
   while (true)
   {
       WinampWindow = FindWindow("Winamp v1.x", null);

       //if winamp is running
       if (WinampWindow != 0)
       {
     //write playlist
     SendMessage(WinampWindow, 1024, 0, WM_WRITEPLAYLIST);
     //get winampstatus
     WinampStatus = SendMessage(WinampWindow, WM_USER, 0, WM_GETSTATUS);
     switch (WinampStatus)
     {
         case 1:
       lblWinampState.Text = "Playing";
       groupBox2.Visible = true;
       break;
         case 3:
       lblWinampState.Text = "Paused";
       groupBox2.Visible = true;
       break;
         default:
       groupBox2.Visible = false;
       lblWinampState.Text = "Stopped";
       break;
     }
     //get old song position
     OldSongPosition = CurrentSongPosition;
     //get new song position
     CurrentSongPosition = SendMessage(WinampWindow, 1024, 0, WM_PLAYLISTPOSITION);

     //if new song isnt the old song (new track)
     if (OldSongPosition != CurrentSongPosition)
     {
         StreamReader streamread = new StreamReader("C:\\Program Files\\Winamp\\Winamp.m3u");
         string curLine;
         i = 0;
         while ((curLine = streamread.ReadLine()) != null)
         {
       //prevent line which start with # to be counted
       if (curLine.StartsWith("#"))
           continue;
       //if we reached the current file
       if (i == CurrentSongPosition)
       {
           //getting fileinfo of current song
           FileInfo fileinfo = new FileInfo(curLine);

           if (pictureBox1.Image != null)
         pictureBox1.Image.Dispose();
         
           //getting MP3 tags
           MP3File mp3File = ShellID3TagReader.ReadID3Tags(curLine);
           txtFilename.Text = curLine;
           txtArtist.Text = mp3File.ArtistName;
           txtAlbum.Text = mp3File.AlbumName;
           txtTitle.Text = mp3File.SongTitle;

           //if there is a folder.jpg in the directory of the current playing song
           if (File.Exists(fileinfo.Directory + "\\folder.jpg"))
           {
         pictureBox1.Visible = true;
         pictureBox1.Image = new Bitmap(Image.FromFile(fileinfo.Directory + "\\folder.jpg"), 100, 100);
         //setting the folder.jpg as the MSN DP
         MSN.set_MyProperty((MessengerAPI.MCONTACTPROPERTY)2, fileinfo.Directory + "\\folder.jpg");
           }
           else
         pictureBox1.Visible = false;

           break;
       }
       i++;
         }
         streamread.Close();
     }
       }
       else
       {
     groupBox2.Visible = false;
     lblWinampState.Text = "Closed";
       }

       Thread.Sleep(500);
   }
     }
     catch (Exception E)
     {
   
     }
 }