Up To Speed: Amazon unveils streaming-music platform, but it doesn't appear ready for prime time

Amazon Prime members already have access to streaming television shows and movies at no additional charge, so why not offer access to streaming music? In a long-expected move, that's precisely what Amazon (NASDAQ: AMZN) has done, following Google's (NASDAQ: GOOG) subscription All Access service and perhaps in anticipation of Apple's (NASDAQ: AAPL) possible integration of Beats Music into iTunes...