nbsp;                                                    // try to find an MP3 codec
  if (g_mp3Drivers = 0) then Exit;

  maxFormatSize := 0;                                                                               // find the biggest format size
  acmMetrics(nil, ACM_METRIC_MAX_SIZE_FORMAT, maxFormatSize);

  waveFormat := PWAVEFORMATEX(Pointer(LocalAlloc(LPTR, maxFormatSize)));                            // define desired output format
  waveFormat^.wFormatTag := WAVE_FORMAT_PCM;
  if Channels = 1 then waveFormat^.nChannels := 1;
  if Channels = 2 then waveFormat^.nChannels := 2;
  waveFormat^.nSamplesPerSec := SamplesPerSec;                                                      // 44.1kHz
  waveFormat^.wBitsPerSample := BitsPerSample;                                                      // 16 bits
  waveFormat^.nBlockAlign := waveFormat^.nChannels * waveFormat^.wBitsperSample div 8;              // 4;                                                                     // 4 bytes of data at a time are useful (1 sample)
  waveFormat^.nAvgBytesPerSec := waveFormat^.nBlockAlign * SamplesPerSec;                     &n