appletv 4k sonos playbar (optical audio)

I am struggling mightily to figure out how to get audio to my new home theatre setup.   My old setup worked perfectly.  I hardline connected an old Gen appletv to the playbar via digital optical.  The playbar grouped wirelessly with my play 1 speakers and my sub.  I hardline connected my Apple TV to my hdmi wireless transmitter which sent the video image up to my projector.  

The issue with my new setup is that the new appletv does not include digital optical.  So I do not know how to get sound to run through my Sonos speakers.  I upgraded to the new Apple TV because I’m using YouTube tv streaming service.  Do you have any solutions to this problem?

Video Source 

-AppleTV 4k 

Audio 

Sonos PLAYBAR  

Play 1 (left)

Play 1 (right

Sub

Wireless Video Connection

Nyrius Aries Home HDMI Digital Wireless Transmitter & Receiver

Projector

BenQ HT2050a projector mounted to the ceiling 

Streaming Service 

YouTube TV

Thank you,

Loel