Reading synchranized Daisy books in Voice Dream

Hello.
I have never really worked with Daisy books due to the fact that they aren't common in my country so I can have questions that are obvious.
I have purchased a book from National Braille Press in Daisy format to read it in Voice Dream and to have a perfect navigation that Daisy has with levels.
When I imported the zip file to Voice Dream it stated that it is a text book.
However when I simply open this archive in files app there are mp3 files. Is there a way I can switch Text to Audio and backwards?
Thank you!