I chose this option for the past year, and while it was helpful to have someone else doing the reading for a change so I could focus on ds3 and new baby, it also led to several instances of ds 3 being ‘shushed’ by older siblings wanting to listen. We had the mp3 download as we’re in the UK, and it wasn’t so easy to go back to a bit you’d missed, like you would be able to backtrack a few lines/pages in a book.
My older two are grades 4 and 2.