I'll have to look into rules for low power FM. Could you broadcast midi music with "stenographic" data hidden in variations, and not run into anti-encryption ru

I'll have to look into rules for low power FM. Could you broadcast midi music with "stenographic" data hidden in variations, and not run into anti-encryption rules? Or just plain modem-like streams at low RF power? FM might give a cleaner signal through FM-in-a-phone than through microphone pickup.