Photo CD Audio
From Just Solve the File Format Problem
Overview
Mny Photo CD discs back in the day had an 'audio' folder with files named audio##.pcd
Some of these are just CDDA audio and convert with `sox -t cdda`
Others however do not convert correctly with that format and must be in some other format. Doing `sox -t lpc` allows you to 'hear' some sort of structure/voices but haven't been able to track down the correct settings to convert this audio format.
