As long as the Bubsy: The Woolies Strike Back OST is free content, the DLC will automatically download when you purchase the game. You can not access the OST through the Steam game list, you must access it via the local drive on your PC. You can do that either by right clicking on Properties of the game from the library menu and then accessing the local files tab - the OST folder will be visible and the tracklist and tracks will be inside that folder. You can access the OST directly via a local drive search: The Tracks will be in your OST folder in the Steam Directory: ...Steam\steamapps\common\Bubsy The Woolies Strike Back\ost Either way the Music is there for you to enjoy.