public override IEnumerator IeUpdate()
 {
     while (true)
     {
         if (KeyControl.GiveKey(DX.KEY_INPUT_0) == 1)
         {
             if (m.IsPlaySound())
             {
                 m.StopSound();
             }
             else
             {
                 m.ContinueSound();
             }
         }
         if (KeyControl.GiveKey(DX.KEY_INPUT_1) >= 1)
         {
             int pan = m.PanVal;
             m.ChangePan(pan - 3);
         }
         if (KeyControl.GiveKey(DX.KEY_INPUT_2) >= 1)
         {
             int pan = m.PanVal;
             m.ChangePan(pan + 3);
         }
         if (KeyControl.GiveKey(DX.KEY_INPUT_3) >= 1)
         {
             float vol = m.Volume;
             m.ChangeVolume(vol - 3);
         }
         if (KeyControl.GiveKey(DX.KEY_INPUT_4) >= 1)
         {
             float vol = m.Volume;
             m.ChangeVolume(vol + 3);
         }
         if (KeyControl.GiveKey(DX.KEY_INPUT_5) >= 1)
         {
             m3.PlaySound();
         }
         yield return(0);
     }
 }