Here we are a year later with the same problem!!!!
lyssa - what version are you using for audible?- mine did not do this until I got os7 and a newer audible app. Back yours up if it is not connected to cellular and it does NOT give these horrifically annoying popups all the time. Like cave newt, I like to hit rewind once in a while and wham! there is that awful popup! again! or if I change programs and come back, yeah, there is that popup again. You have to hit ok to get it to go and that's awful when you are driving.
Personally I keep bugging audible about this. A lot of people say it is an apple problem but only a few apps do this allatime begging. I'd say audible has wanted this is the app. Complain to them.
For those who would like to tell me how to turn cellular on for audible, forget it. I tuned it off because I don't want it on. And yeah, it didn't use to do this.
I've taken to using the iTunes music player app which is not as nice an app but it only asks once in a long while for cellular and not over and over and over.