Music streamer Rdio has upgraded it's streaming quality to 320KpBS and joined Bob Weir of the Grateful Dead's new "Artists For Quality" initiative to improve streaming audio quality. The upgrade, which puts Rdio on par with Spotify, Beats, Deezer and most other major music streamers, highlights the increasing public debate over improving the audio experience. But it still remains to be seen just how much most consumers care about higher quality sound. Several fledgling digital music services, most notably Scandinavian music streamer WiMP and Neil Young's yet to launch PonoMusic download store and player, already offer music in the higher...

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