http://www.pcgamer.com/2014/07/24/steam-music-moves-into-open-beta-desktop-interface-now-available/
I've spent the last few minutes prodding the Steam Music beta. You can, too: it's now open to all who want to try it. It's, er, well basically, it's an mp3 player. But one that you can access in-game, through the Steam overlay. Yes, I know, not revolutionary, but there are a some reasons why it might be useful.
-후략-
일종의 뮤직플레이어 플러그인 개념인거 같은데...
오픈베타중이라는군요...
점점 서비스의 방향성을 넓혀가는군요!