Воспроизведение нескольких звуков одновременно

//-------------------------------------------------------------------
#include <windows.h>
#include <mmsystem.h>
//-------------------------------------------------------------------
UINT MCIOpen(LPSTR FileName)
{
   MCI_OPEN_PARMS mciOpen;
   memset(&mciOpen,0,sizeof(MCI_OPEN_PARMS));
   mciOpen.lpstrDeviceType = (LPSTR)'waveaudio';
   mciOpen.lpstrElementName = (LPSTR)FileName;
   mciOpen.lpstrAlias = NULL;
   DWORD flags = MCI_OPEN_TYPE | MCI_OPEN_ELEMENT | MCI_WAIT;
   DWORD rc = mciSendCommand(0, MCI_OPEN, flags, 
              (DWORD)(LPVOID)&mciOpen);
   if (rc)
   {
     Beep(1000,100);
     return 0;
   }
   return mciOpen.wDeviceID;
}
//-------------------------------------------------------------------
void MCIClose(UINT wDeviceID)
{
  MCI_GENERIC_PARMS mcigen;
  DWORD rc = mciSendCommand(wDeviceID, MCI_CLOSE, MCI_WAIT, 
             (DWORD)(LPMCI_GENERIC_PARMS)&mcigen);
  if (rc) Beep(1000,100);
}
//-------------------------------------------------------------------
DWORD MCIPlay(UINT wDeviceID)
{
  MCI_PLAY_PARMS mciPlayParms;
  DWORD rc;
  rc = mciSendCommand(wDeviceID, MCI_SEEK,
       MCI_WAIT|MCI_SEEK_TO_START, NULL);
  rc = mciSendCommand(wDeviceID, MCI_PLAY, 0, 
       (DWORD)(LPVOID)&mciPlayParms);
  return rc;
}
//-------------------------------------------------------------------
DWORD MCIStop(UINT wDeviceID)
{
  MCI_GENERIC_PARMS mcigen;
  DWORD rc = mciSendCommand(wDeviceID, MCI_STOP, MCI_WAIT,
            (DWORD)(LPMCI_GENERIC_PARMS)&mcigen);
  if (rc) Beep(1000,100);
  return rc;
}
//-------------------------------------------------------------------

main()
{
  UINT ID1 = MCIOpen('1.wav');
  UINT ID2 = MCIOpen('2.wav');
  MCIPlay(ID1);
  MCIPlay(ID2);
  Sleep(5000);
  MCIStop(ID1);
  MCIStop(ID2);
  MCIClose(ID1);
  MCIClose(ID2);
  return 0;
}

main()
{
  PlaySound('1.wav',NULL,SND_FILENAME|SND_ASYNC|SND_LOOP);
  UINT ID2 = MCIOpen('2.wav');
  MCIPlay(ID2);
  Sleep(5000);
  MCIStop(ID2);
  MCIClose(ID2);
  return 0;
}