Oh Portal 2, just when we escape from your dangerous test chambers and psychotic self-aware robots you just dangle something shiny in front of our faces and pull us right back in! Valve is still giving Portal 2 fans some love by giving away some more free music and ringtones from the game. Portal 2 Songs to Test By – Volume 2 is now available now on the official Portal 2 site. The first volume is still there, if you didn’t get it already, and the third volume is listed as “coming soon”. So what are you waiting for? GO NOW!