I listen to Music Choice on my fios TV. The box under my TV is a CISCO CATV converter 335HDC . Is there a secure wireless speaker I can connect to the STB(converter) . So I can listen on my porch. How's that done?
You would have to find a device that would convert the analog output to a wireless signal.The device would be dependent on your speaker.
I would try googling your speaker (or type of connection) to look for devices that can do what you need.