P2P software is a growing concern to the music industry, who are finding it hard to sell CDs when people are getting the songs illegally for free. In an effort to stay ahead, the record industry has started to use something called “Dodgy Restrictions on Music”, or DRM. To combat music piracy, Sony has started adding DRM software to audio CDs which it sells, for example to the new CD from Canadian Rockers RootKit, recently published by Sony Music.