Don Katz saw the way the internet would revolutionise audio distribution, and the first storage device Audible.com produced is now an exhibit at the Smithsonian Museum in Washington DC.
It is a guess based on the size of the storage that has been purchased, the fact that video consumes far more data than audio, and the introduction of a simple audio locker or cloud-based version of iTunes is unlikely to require this much storage and capability out of the gate.
It offered the first Palm OS devices with removable storage, the first devices that could play back audio and video, and the first high-resolution color devices.