You will see a monetized symbol next to each track once SoundCloud has officially turned on a specific track for monetization.
IMPORTANT: Once a track is turned on for monetization, not all plays are monetized. Only plays in which an actual ad is placed on the track at the time of a visitor play will be monetized and can generate revenue. Any plays in which an ad is not placed on the track at the time of the visitor play cannot accrue revenue. Ads will be placed on your tracks once ads are available on our partners' side. Our partner controls all ad placement depending on ad availability on their side.