Hmmmm, I've never heard any ads either. Was it during someones show? If so they may have played it. I know it wasn't in the psa rotation.

I would deduce that either :

A: A dj played it on purpose

or

B: It found it's way into our music rotation. At night when there is no live DJ we go on automation. The computer plays 4 music cuts, a pasa, a playa tip, 4 music cuts, a psa, a station ID, etc. etc. The music cuts are loaded into the database. Only a few people have had access to the database or even know how to load a cut into it. The handful of people that know how to load a cut are decidely twisted (and I mean that in the nicest way, myself included). It may have been loaded in on purpose. I'm constantly amazed at what that computer spits out. One minute you hear a Bulgarian Folk song, then some punk band, then train sounds.