file has unsupported sample rate"
   Case ERROR_INPUT_FILE_UNSUPPORTED_CHANNEL_COUNT
      MACErrorMessage = "Input file has unsupported channel count"
   Case ERROR_INPUT_FILE_TOO_SMALL
      MACErrorMessage = "Input file too small"
   Case ERROR_INVALID_CHECKSUM
      MACErrorMessage = "Invalid checksum"
   Case ERROR_DECOMPRESSING_FRAME
      MACErrorMessage = "Error decompressing frame"
   Case ERROR_INITIALIZING_UNMAC
      MACErrorMessage = "Cannot initialize UnMac.DLL"
   Case ERROR_INVALID_FUNCTION_