new sonos play and Samsung freestyle video projector

If the Sonos in question receive Bluetooth, it wouldn’t know where the broadcast came from. Bluetooth is only stereo, not a 5.1 signal, and there is no guaranty about lag, either. It isn’t an issue with music, but with lipsync on video it could be a problem. I wouldn’t recommend it. 

According to Crutchfield’s when info, it supports ARC/eARC. I’d suggest a Sonos soundbar would be a better option, although cabling would be challenging. Sonos doesn’t make a great solution for projectors, which want to be in the back of the room, when the speakers want to be in the front, where the image is. 

I have no experience with any of these but they appear to extend eARC and should serve to link a projector and soundbar.

One of many a search turned up:

AV Access eARC Audio Extender 330ft,

Send Dolby Atmos from TV to Receiver Over Cat5e/6,

ARC Compatible, IR/CEC Control, Home Theater Audio 

https://www.amazon.com/AV-Access-Extender-Ethernet-Theater/dp/B0CMX296S3?th=1