I've found that all my audiobooks won't play on the Audible app until I delete them and redownload them, following upgrading to iOS 5.
Letting others know now, because it would suck not to learn this till maybe getting on a flight or something similar and lacking wi-fi to download. AFAIK, you still need wi-fi to download, because most audiobook files are too big for 3G.
Letting others know now, because it would suck not to learn this till maybe getting on a flight or something similar and lacking wi-fi to download. AFAIK, you still need wi-fi to download, because most audiobook files are too big for 3G.