As far as I know, radio doesn't broadcast the right audio frequencies for reproducing ultrasonics, but I could be mistaken. Masked is possible, but you won't be able to detect them if they don't want you to. What to do about it if "they" are putting subs in music? The only thing you can do is stop exposing yourself.
Subliminal Audio Specialist & Administrator
The scientist has a question to find an answer for. The pseudo-scientist has an answer to find a question for. ~ "Failure is the path of least persistence." - Chinese Fortune Cookie ~ Logic left. Emotion right. But thinking, straight ahead. ~ Sperate supra omnia in valorem. (The value of trust is above all else.) ~ Meowsomeness!
The scientist has a question to find an answer for. The pseudo-scientist has an answer to find a question for. ~ "Failure is the path of least persistence." - Chinese Fortune Cookie ~ Logic left. Emotion right. But thinking, straight ahead. ~ Sperate supra omnia in valorem. (The value of trust is above all else.) ~ Meowsomeness!