A decade after Sony BMG agreed to pay $10 million in a payola settlement, it seems pay for play is hitting the streaming sector.

That's according to several sources who believe playlists are the best new method of exposure for artists. Glassnote founder and president Daniel Glass (pictured) said: "I’ve heard scuttlebutt about [pay for play], but I don’t have concrete evidence."

Other unnamed sources are more assertive, with one claiming that the practice is "definitely ...