while ( dwSamplesToConvert > 0 )
	{
		// Determine how many byte to convert this time
		DWORD dwBlockSize = min( dwSamplesToConvert, BLOCKSIZE );
		
		// read chunck
		fread( gpsSamples, dwBlockSize, sizeof( BYTE ), fpIn );
		
		// And write the byte back to the file
		fwrite( gpsSamples, dwBlockSize, sizeof( BYTE ), fpOut );
		
		// Decrement the number of bytes to convert
		dwSamplesToConvert -= dwBlockSize;
	}

    pwh->lpData = ( LPSTR )&pwh[1];
    pwh->dwBufferLength = cbData; 
    pwh->dwBytesRecorded = cbData;
    pwh->dwUser = ( DWORD )cnsSampleTime;
    pwh->dwLoops = 0;
    pwh->dwFlags = 0;
	
    CopyMemory( pwh->lpData, pData, cbData );