User blog comment:Evans0305/Rapture Archives now has Rapture Radio/@comment-1500935-20110430095220/@comment-1500935-20110430234941

Not all the tracks played at rapturearchives.org comes from that promotional campaign and I ensure you that I had the original list of the tracks for some long now (coming from some site I don't remember the name, maybe Kotaku), and some of them are unused tracks from the "official soundtrack" that was released with the game.