well you know i havent tried audio books but i have been listening to philosophy podcasts. i found the podcast app on my iphone and found this philosophy podcast on there. and its kinda perfect because the podcasts arent long - maybe 30 min to and hour and theyre audio - so they keep my attention and i still think and it uses up my time. so its practically perfect. im gonna try to find other podcasts to listen to. if anyone can recommend some.