Not sure if I'm putting this in the right group, apologies if not, but I'm wondering if there is any way to get music purchased on Steam (that is, game soundtracks that often come bundles with games) onto my iPhone wihout manually downloading them, adding them to the iTunes Library, and then syncing them from the desktop iTunes to the iPhone via sync or iTunes Match.

For example, is there a streaming function on the Steam iOS app, or a way to validate Steam album purchases into iTunes equivalents so they can be downloaded directly, the same way albums purchased in the iTunes Store can?