They're always open, with no need to dial up.

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With Audible's suite of mobile apps, last listening position, bookmarks and notes are saved in the cloud, ensuring drivers always pick up where they left off when they open their iPhone app.

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Tibbets says they are working on making it easier for any company with an API to set up a channel, so even if some of the big players tighten up access from time to time, there will always be plenty that want to keep things as open as possible.

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