It doesn't need changing but let me explain about the introduction
It goes
intro1
disclaimer
intro 2
THe intro 1 bit was added at the request of listeners who were either visually challenged , or using mp3 players without screens which do not remember where you stopped listening
So they need to flick through the chapters to find their place.
So the intro 1 bit needs to be brief and to the point
Where the book has chapters we normally just say "Chapter 3 of the World as will and idea"
When there are no chapters or long chapters or short chapters so each file is not equal to a chapter saying "Section 3 of the World as Will and Idea"
Then the disclaimer
Then the book, author , part you are reading which can be chapter, paragraph or whatever, translator.
Hope this makes it clearer
Anne
Edit - I checked the first post - this is exactly what it asks for , so the short answer is - do what it says in the first post