I have set-up a Sonos Connect: Amp to play music through four wired ceiling speakers in a room of my house. The four ceiling speakers are wired to the terminals on the back of the Connect: Amp. A 2018 Samsung TV is hung on awall of the room. Two communication cables terminate behind the TV: a coaxial cable used for cable TV feed and an unfinished Cat 6E Ethernet cable (not in use). The other end of the Ethernet cable (also unfinished) terminates in an A/V closet within reach of the Sonos Connect: Amp. It does not appear practical to replace the Ethernet cable with, for example, an HDMI cable due to the roughly 70-80 ft cable run (where the entire run is behind the walls).
I would like the TV audio (but not surround sound) to play on the ceiling speakers through the Connect: Amp. Can I use the Ethernet cable to play TV audio through the ceiling speakers? If so, how?
Thanks for any knowledge you can share.