Sony Music Unlimited (free) has only been available for iOS for about a year, but those who have embraced the service for their Apple products will get a treat soon -- an update that not only provides higher-quality streaming, but also adds offline playback of music.
In the offline mode, users get the ability to download single tracks or entire albums for their listening pleasure off the network. Streaming gets a boost up to 320 Kbps AAC files; that's a feature that is just a setting change away. Unfortunately these two features don't coexist, as there's no way to download the 320 Kbps music files for offline listening.
The update takes the iOS version of the app up to complete feature parity with the Android v
