It looks like Sony Ericsson is taking a page out of Apple's book for the launch of its app store, bundling the service in with the very same platform it already uses to distribute music and movies. PlayNow arena -- which was originally designed for music distribution and whose movie rental functionality is going live this month in a handful of locales -- is now being expanded to incorporate applications as well, initially coming to 13 countries and some 38 Sony Ericsson models. Conveniently, PlayNow arena is already well-plumbe
