Playsound

case WM_CHAR:
        switch ((char)wParam)
        {
        case '1':
            //SuspendThread(hThrd2);
            //ExitThread(hThrd2);
            //TerminateThread(hThrd2, DLL_THREAD_DETACH);
            PlaySound(TEXT("F:\\Burn\\quynhlan\\aa.wav"), NULL, SND_LOOP | SND_ASYNC);
            IsPlaying = true;

            break;
        case '2':
            if (IsPlaying)
            {
                PlaySound(NULL, NULL, 0);
                IsPlaying=false;
            }
            break;
        default:
            break;
        }