The roofers finished the roof today, although there's still gutters and some miscellany to do. I listed to the MP3 files through Chapter 5 of the Trang audiobook and found some fixes.
I also realized that I can't really create a final MP3 file, because different audio- and podiobook outlets have different requirements. It was worth generating these MP3s so that I could give them a final listen with earphones, but given how many different versions I'm going to have to generate. there's no point in doing more than a spot-check of the MP3 files I actually release.