Today, Facebook Gaming is set to allow its affiliated streamers to play copyrighted, popular music in the background of their live streams — meaning that they have apparently solved the copyright problem that has plagued live streaming (and practically the entire internet) since its inception. A spokesman for Facebook Gaming put it like this in a press release:

So, how’s it work? Music played during a gaming broadcast must be a background element, not be the primary focus of the stream. For example, a streamer’s voice and/or gameplay audio should be in the foreground. This also applies to clips made from a livestream, and the VOD version of livestreams, but does not extend to separately edited and uploaded VOD content.

To be sure, the licenses Facebook has evidently secured do not contain any track; others, interestingly, are "limited." If streamers want to play them, they'll get a pop-up warning that the track they 're playing isn't currently approved for use on Facebook Gaming. It's also not explicit which tracks are excluded, which means that we can't tell which tracks are not. (Facebook says that the service will soon roll out to all of its streamers)