Sony has a number of game-changing technological successes in its history, such as the Walkman, PlayStation, and Blu-ray disc, but it's also produced failures like the Betamax tape, MiniDisc ...

While the announcement of the K850i Cybershot phone gave digicam execs the heebie-jeebies, the new W960i Walkman phone will have drawn similarly nervous glances from the music player clan. It ...