We've seen quite a bit of squabbling over the subscription and in-app purchase for content rules on the App Store in the past, but generally, things have tended to go Apple's way. Most companies, especially those who really depend on the iOS audience for buying their content, are eventually willing to put up with Apple's 30% cut of any content prices sold through an App Store app. But that's not the case with Audible, sellers of fine audiobooks for your iPhone and iPod touch -- the company has pulled the option to buy content directly through the app in the iOS version's latest upda
