No problem: The Google Music Android app automatically stores your most recently played songs on your device so you can access them without an Internet connection. You can manually select specific albums or playlists to be made available for offline use, too.

Not yet. Google had planned to create a music store within the product but ran into conflicts with the record labels (their demands were "unreasonable and unsustainable," according to one Google manager).

That said, Google has indicated that it plans to keep talking with publishers in order to find some sort of integrated music-selling solution for Android.