So I searched and found some info on "PhotoListening" but I wondered if there is any new information. For the course I am taking, there is a CD program that covers the material in the books. I was going to get the CDs and listen to them while I am walking/running/exercising. Since I will be exercising, I will not be able to consciously concentrate on the subject, esp. since the subject is somewhat technical. However, I have to assume that this is helping my mind learn the information and maybe the lack of conscious effort while help even more. Any suggestions?