Each lesson has an A and a B part. Note that the intro text has level 1 and 2. The longest intro lesson is about 31 minutes. Lessons Preliminary through lesson nine. Each lesson has several parts.
Times are approximate.
The file names are frxyh.mp3 where fr is for French, xy is the chapter number, and h is for Horizons. Lessons have an A and a B part except lesson 01. 45 min Chapter 16 Accurate English Times are approximate. 2 A tape 2 B Tapes are about 40-45 minutes per side. Note that 1A begins with chapter 2.