Peter Kafka, reporting for Recode: Here's the latest salvo in the back and forth between YouTube and the music industry: A report from Google that says its video site's copyright software has allowed content owners to generate $1 billion in the last year or so. Or, in other words: Hey, music guys! Stop moaning about money -- we're making plenty of it for you. Google's formal message comes via "How Google Fights Piracy," a 62-page mega-pamphlet it is releasing today. Google adds that its Content ID tool, which lets copyright owners "claim" their videos that users upload to YouTube so that ad money can be made off it, has garnered $2 billion since 2007. This is Google's response to a growing concern from the music industry that YouTube doesn't pay well, its Content ID isn't a solution, and that the video platform is built on stolen material.