Learning Mathematics using only audio. Are there any mathematics audio books or other audio sources for learning mathematics, like for example math podcasts which really go into detail. I ask this because I make about 1 hour from my house to the school and staring at a screen on the car makes me dizzy. I know about podcasts and stuff but those don't really teach you math, they talk about math news and mathematicians.
I ask this because many topics can be understood just by giving it a lot of thought and don't necessarily require pen and paper.
Regards.

My suggestion would be to narrow down topics you would like to learn and find YouTube videos of them, then download those YouTube videos listen to them during your commute. 
I have a daily two hour bus commute and use youtube video's audio to reinforce topics i'm learning at school. 
For example: Lets say you want to review calculus, listen to this video on repeat for an hour (its 20 minutes long so you could get through it 3 times!)
http://www.youtube.com/watch?v=di_bzYD0Mkg
