The Machinery of Freedom as an Audiobook

I am in the process of recording my first book, The Machinery of Freedom, which I plan to make available on Audible and iTunes. So far I have recorded parts I-III, which include all of the contents of the first edition, and the recordings are now on my web page for comments. If you notice any mistakes, let me know.One problem in doing an audiobook is footnotes. I have mostly left them out, aside from ones that could be, and needed to be, incorporated in the text. Suggestions on that subject are welcome. Possibilities include:What I have done, perhaps incorporating moreInserting all footnotes in the recording, probably as "footnote: ..."Giving the URL of the webbed second edition in my introductory comments and suggesting that anyone who wants to see the footnotes for parts I-IV can find them there.The webbed recordings are lower quality than the ones I will use for the final audiobook, 16 kbps instead of 192 kbps, in order to keep down file sizes so as to make downloading easier.