The global market for illicit copies of CDs has exploded, according to a new report from the record industry, and “the illegal music market is now worth $4.6 billion globally.” New technologies have made it possible – and simple – to copy not only the contents of a traditional CD, but the cover art and liner notes as well, and the industry estimates that, for the first time, the number of illegal CDs in existence has topped a billion. According to the report, two of every five CDs sold are illegal copies, often without the knowledge of the buyer, and there is no end in sight.