Turns out that I can't feed a new hdmi cable 60 feet across my house alongside (useless) rgb and coax cable.

The existing surround sound of my house is wired to come from an audio receiver in a closet 60 feet away from the tv and front speakers.

I guess the builders assumed people would always be getting their signal from outside cable/dish/antenna coming first into that closet.

Everything we watch comes streamed from smart TV apps.

I need a solution to get the audio out from my TV to the closet 60 feet away so that I don't have to run new speaker cable everywhere.

I'm thinking of something like Google cast audio from the TV to the receiver in the closet but I don't know whether that will work.

Anyone have any ideas?