Will I Get Royalties?
The Radio Airplay service is royalty free as agreed upon in the terms during the sign up. http://www.radioairplay.com/airplay_terms (See #3 under General)
Paid for plays utilize play credits to place you the Radio Airplay artist in a Jango Radio station. You the artist choose your chosen target listener audience and are inserted into the station accompanied by a Promo Unit pop-up, very much like an ad placement. This is royalty free.
Any extra promotional opportunities from contests or weekly awards to top artists are also royalty free at this time as well.