Valve’s Steam is the iTunes of PC and Mac gaming: a digital store where players can browse and buy games to download to their computers, which has also fuelled a resurgence of titles from independent developers. In 2014, though, it’s expanding into music. In February, Valve – also the maker of games like Half-Life and and Portal – announced plans for something called Steam Music, which would help people listen to their digital music collections while playing games. Yesterday, the Steam Music Player came out of beta. “Point Steam to the MP3s on your computer, then browse your collection of albums and artists,” explained the company, which is adding music controls to its ‘overlay’ so that people can control them while playing. Steam is also promoting the idea of ‘Free Soundtrack DLC’ for games, where players get a downloadable version of their soundtrack for free when buying. Valve says it’s planning to add more features, and with 75m Steam users, it’s definitely something to watch.