Warner Music reported its results, and digital sales made up nearly half of U.S. recorded music sales. Or 30 percent of total sales. Unfortunately, Warner Music isn’t growing much or profitable. Still, the digital share is impressive from a transition standpoint, although digital will never restore the industry to the size it was at the end of the 1990s, even if some pirates pay. (Paidcontent’s lead paragraph is misleading.) Meanwhile, everyone’s favorite group listening site, Turntable.fm, has already been cloned. Rolling.fm looks like a complete knockoff, with a twist: college-oriented play rooms. The next era of social music is underway with a vengeance, even if it likely won’t be Facebook’s next billion-dollar business.