Subscription music stream Rdio has upgraded its entire 30 million song library to high quality AAC audio. Listeners now have four sound quality settings ranging from data-efficient 64 up to 192 kbps. Paid Rdio Unlimited subscribers now also have the option of listening in pristine-quality 320 kbps. Spotify offers streaming rates from 96 to 320 kps for paid subscribers in the Ogg Vorbis format. Users can individually select audio settings for a variety of uses, whether like Wi-Fi, cellular streaming or listening to offline downloads. Earlier this year Rdio announced a partnership with Bob Weir, a founding member of the...

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