In an indication of what the Wall Street Journal calls a "seismic shift" in the way people now acquire music, CD sales for Q1 2007 are 20% below what they were last year. Digital song sales, which were expected to salvage the industry, have risen 54% in 2007 from last year to 173.4 million, but that is not nearly enough to compensate for the 20% drop in CD sales to 81.5 million units. Overall music sales, both digital and physical, are down 10% this year. Adding insult to injury, one billion songs a month are traded on pirate networks....