Google Play replaces the Android Marketplace with a single clearinghouse for Google purchases.
The app store formerly known as the Android Marketplace was transformed today into Google Play. Play is a high-design site that offers not just apps, as the marketplace of yore did, but also folds in Google's eBookstore and Google Music to offer movies, books, and songs.
Taking a page from the Amazon playbook, Google has grown out its specialty shops into a digital mall. And taking another page, this one from Apple’s iCloud, Play will allow for synching across multiple devices, as the store and your files reside in the cloud.
Play will allow you to store up to 20,000 music files, including songs that you did not purchase through Play – the same limit set by Google Music. It does not allow you to store movies, however.