I predict that the mobile phone will soon become the One Device to Rule Them All – just one gadget to carry for phone calls, music, eBooks, photos, games, GPS, video, and more. But most importantly, our cell phone will be our audiobook playback device, with Bluetooth connectivity to radio & stereo and instant downloads from online vendors or public library. Nokia cell phone customers have a new upgrade that will make the transition easier. On the Nokia Blog, software developer (and audiobook fan) Janne Vainio describes the new audiobook software manager. Download Nokia Audiobooks here. How long do you think it will take to simplify our tech gadgets into One Device? I give it three years.