I'm in the process of editing and posting 40 lessons given in 1970 and 1971 to The Prosperos website and to the Internet Archive. So far, I've completed 10 lessons. Lessons available can be found in the Open Meetings section of this website.

It's a lot of work because I trim the greeter's remarks from each copy, leaving only a brief introduction of the speaker and Thane's presentation. The opening meditation and closing music have been removed to avoid copyright hassles.

So, it's a matter of loading the existing audio file into an audio editor along with the introduction and closing tags, trimming where necessary, and saving to mp3.