I used Audiblox with my dyslexic son when he was 8 or 9. At the time I didn't know he had dyslexia. It was the most fringe-y thing we did for remediation.

About 3-4 months after starting Audiblox, my son went from laboriously sounding out every word to reading fluently. I believe that the Audiblox might have been the thing that helped that along. The exercise that I believe helped the most was the little flashcards with the words where you put two down quickly one after the other and then cover them and ask what the words were.