bsp;     // byte-rate
  waveFormat^.cbSize := 0;                                                                          // no more data to follow

  mp3format := PMPEGLAYER3WAVEFORMAT(Pointer(LocalAlloc(LPTR, maxFormatSize)));                     // define MP3 input format
  mp3format^.wfx.cbSize := MPEGLAYER3_WFX_EXTRA_BYTES;
  mp3format^.wfx.wFormatTag := WAVE_FORMAT_MPEGLAYER3;
  mp3format^.wfx.nChannels := 2;
  mp3format^.wfx.nAvgBytesPerSec := 128 * (1024 div 8);                                             // not really used but must be one of 64, 96, 112, 128, 160kbps
  mp3format^.wfx.wBitsPerSample := 0;                                                               // MUST BE ZERO
  mp3format^.wfx.nBlockAlign := 1;                                                                  // MUST BE ONE
  mp3format^.wfx.nSamplesPerSec := 44100;                                                           // 44.1kHz
  mp3format^.fdwFlags := MPEGLAYER3_FLAG_PADDING_OFF;
  mp3format^.nBlockSize := MP3_BLOCK_SIZE;