Sony Music Unlimited for iOS adds high-quality streams and offline mode

Just a few weeks ago, we learned that Sony Music Unlimited for iOS would be introducing offline mode and high-quality streaming, and today that update has gone live in the app store. Music Unlimited subscribers can now save songs, albums and playlists for easy listening even when short an internet connection. When online, you'll have the option of switching on high-quality streaming of 320 Kbps AAC files -- just remember to keep an eye on how much data you're gobbling up. Lastly, version 1.3.1 a...