Berard Auditory Integration Training and the Tomatis Method are also worth looking into depending on what's going on; a book called "Hearing Equals Behaviour: Updated and Expanded" goes into detail on the above treatments.
The Tomatis Method is a little pseudoscience-y for my tastes -- you have to buy the tapes / app / etc. directly from the Tomatis folks, and I've never seen any good studies from a non-conflicted third party that support its efficacy.
All of the science and math behind the algorithms are available - you can recreate it yourself, but like most things it's easier to buy what someone else has already put the work in. I'd recommend getting and reading the book to balance out a perspective.
