I have brought books when hunting. I haven't thought of the audio book, however- that is a good idea. When muzzy hunting, I usually get antsy after awhile and get up and walk around/do still hunting - I don't stay in the stand all day. However when bow hunting, I sometimes stay up in the tree for 6 - 8 hours at a time. The only thing that would concern me is not being able to hear a deer coming up from behind me, which happens pretty often in a tree stand. I guess you could keep an ear bud in one ear and the other one free....