Automatizing Conversion/Saving Operations

I have 50+ MP3 recordings of 200MB (1.5 hrs) to process thru Audacity.

  1. Open the File from Directory A
  2. to boost the volume (Normalize)
  3. Add a dummy Mono Track
  4. Export Mulitple to MP3 of 33bit (Chopping the size down to 20- MB)
    to Directory B.

***** Each file takes quite a while to do.

How do I automatize the operation (Macro?) ?
i.e. Select the files, Kick Starting the Macro,
back every 2 hours or so to check the progress.

Audacity’s Macro is called chains.

( other free batch-processing software worth looking at is SoX)