I think you can condone something without a word or action. Simple inaction in the face of another action would condone it, absent any effort to stop it. If you sit by and do nothing when something occurs in your presence, you are condoning it without actions or words. I don't know if this has a name. This is not, however, the case with the radio station. They are taking action by playing the song, thereby actually promoting whatever message is in the song, a step up from condoning. I'm sure it's a simple case of the Almighty Dollar. If there's profit in playing it, they will, no matter what the message.