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If the AV out is 3 or more RCA jacks, and 2 of them are Red/White, then you can pick up the Audio there and Transmit it over BT. The video won't work with these simple boxes; if you want wireless Video and you have HDMI then just look up Wireless HDMI and you're in business. (Just remember some of those video transmitters get Hot while working; need ventilation.) I've marked 2 Random examples below (Not "recommended", just Examples)
I would recommend:
Sorry, there was a problem. Please try again later.Yes, as long as you have an audio out on your cable box this will work.
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