Load Audio or Vedio files

   //Load Audio or Vedio files
         private void btnLoadFile_Click(object sender, EventArgs e)
         {
             Startindex = ;
             playnext = false;
             OpenFileDialog opnFileDlg = new OpenFileDialog();
             opnFileDlg.Multiselect = true;
             opnFileDlg.Filter = "(mp3,wav,mp4,mov,wmv,mpg,avi,3gp,flv)|*.mp3;*.wav;*.mp4;*.3gp;*.avi;*.mov;*.flv;*.wmv;*.mpg|all files|*.*";
             if (opnFileDlg.ShowDialog() == DialogResult.OK)
             {
                 FileName = opnFileDlg.SafeFileNames;
                 FilePath = opnFileDlg.FileNames;
                 for (int i = ; i <= FileName.Length - ; i++)
                 {
                     listBox1.Items.Add(FileName[i]);
                 }

                 Startindex = ;
                 playfile();
             }
         }