App should have volume control within app so you don’t have to turn up all your phone to be listening to a book; speed and tone should have more options, and options should be programmable for fast forward /rewind as well as sleep timer. One large change that really ought to occur, if Library of Congress actually cares about representing books well and as intended by author, Best recordings of books should be located and used! I’ve listen to several series and in some, the reader pronounces the same word, spelled the same in text, in a different way… Some series, different readers are reading books throughout the series, which is at best annoying. I have listened to some of these series on CD, and my experience was far better because the reader did an all-around better job; this directs back to my saying the best recording of a thing should be found and used. The search function on the website seems very limited, or perhaps it is only that it is a quite limited selection available… Which is also a huge disappointment. Oh, and one more point: getting a book download it to listen within the this app app is not as easy or simple as it should be; you must add a book to your wish list, open your wishlist, and choose to download the book.