You can connect a Smart TV to ANY Surround Sound, Stereo System , soundbar.
This video shows how to use HDMI ARC ( HDMI Audio Return Channel) for Home Theater sound.
HDMI ARC may be used even with stereo systems which have no HDMI ports, by using simple inexpensive adapters. All configurations in this video have remote control of volume and mute using the TV remote control even if the Audio system is not equipped with a remote control.

Chapters:
00:00 Why a Separate Audio System for a TV?
01:25 Types of Audio System Good for TV Sound
02:48 Types of Cables for TV Sound Output
04:42 Connecting an Audio System using HDMI ARC
06:59 Using HDMI ARC and Vintage Receiver
10:00 If The TV Sound Doesn't Work

Once your smart TV is connected to a good audio system, you can truly enjoy streamed music services like Spotify, Amazon Music, or Pandora, or If you want even higher quality without paying for a monthly subscription, you can stream the music that you already own, from your home computer. Check out this video to show you how: https://youtu.be/DZSx9ZPveqY

Related Videos;
HDMI ARC Problems Solved! Connect a TV to an Audio System for Non -Techies (part 2 of 4).
https://youtu.be/CpXwIrUYyF8

Connect an iPhone to ANY TV Wirelessly Using Airplay.
https://youtu.be/vMGS_5CsLsc

Connect a TV to an Audio System for Non -Techies (part 3 of 4) - Using an optical connection.
https://youtu.be/GzoCxR-cDSE

Connect a TV to an Audio System for Non -Techies (part 4 of 4). Troubleshooting the Audio
https://youtu.be/atnfdRHKNBM

Products Featured in Video

HDMI Cable: https://www.amazon.com/Keymox-Support-Ethernet-Compatible-Nintendo/dp/B0835L6DJ9?crid=IRLRLCJNL8JJ&keywords=hdmi+cable+6ft&qid=1666840948&qu=eyJxc2MiOiI0LjU4IiwicXNhIjoiNC4zNiIsInFzcCI6IjQuMzAifQ%3D%3D&s=electronics&sprefix=HDMI+Cable%2Celectronics%2C147&sr=1-1-spons&psc=1&linkCode=ll1&tag=rogergadgetgu-20&linkId=b91f4153e6d02fd1bcabe8fd2970397a&language=en_US&ref_=as_li_ss_tl
RCA Audio Cable: https://www.amazon.com/Monoprice-102864-Premium-22AWG-Cable/dp/B001W0WI02?crid=2MHRF2TSJ80JZ&keywords=rca%2Baudio%2Bcable%2B6ft&qid=1666841236&qu=eyJxc2MiOiI0LjU3IiwicXNhIjoiMy45NCIsInFzcCI6IjMuNTQifQ%3D%3D&s=electronics&sprefix=RCA%2Baudio%2Bcable%2Celectronics%2C139&sr=1-3&th=1&linkCode=ll1&tag=rogergadgetgu-20&linkId=e4bdbb71bfb3c87e7dc02049e6776634&language=en_US&ref_=as_li_ss_tl
Optical Cable: https://www.amazon.com/TNP-Toslink-Digital-Optical-Theater/dp/B019ETC2P8?crid=2AZ75FMWMWKAU&keywords=toslink+optical+cable+6ft&qid=1668223721&s=electronics&sprefix=toslink+optical+cable+6ft%2Celectronics%2C188&sr=1-2-spons&psc=1&linkCode=ll1&tag=rogergadgetgu-20&linkId=9ae221566a0b14147620deb1ce9c7938&language=en_US&ref_=as_li_ss_tl

HDMI ARC audio adapter Featured in Video (worked well with Sony, Samsung and Vizio TVs, could not get it to work with a Panasonic Viera): https://www.amazon.com/Tendak-Extractor-Converter-Soundbar-Amplifier/dp/B07CJ96MQV?crid=2TYNCCFJW6KWI&keywords=hdmi+arc+adapter+to+rca+audio&qid=1666839350&qu=eyJxc2MiOiIwLjAwIiwicXNhIjoiMC4wMCIsInFzcCI6IjAuMDAifQ%3D%3D&sprefix=%2Caps%2C112&sr=8-1-spons&psc=1&linkCode=ll1&tag=rogergadgetgu-20&linkId=8fc112f80d0a4e4229f3851e3a2ef7ea&language=en_US&ref_=as_li_ss_tl

Alternative HDMI ARC audio Adapter (The volume control was not as smooth as the other adapter listed, but it did work with a Panasonic TV): https://www.amazon.com/Extractor-Adapter-Soundbar-Speaker-Amplifier/dp/B09NDB7R7H?crid=3ID83ZYKKKWDC&keywords=hdmi+arc+adapter+to+rca+audio&qid=1666840497&qu=eyJxc2MiOiIwLjAwIiwicXNhIjoiMC4wMCIsInFzcCI6IjAuMDAifQ%3D%3D&sprefix=hdmi+arc+adapter+to+rca+audio%2Caps%2C153&sr=8-16&linkCode=ll1&tag=rogergadgetgu-20&linkId=7fd00538c67212d66af6ce6531aba4bc&language=en_US&ref_=as_li_ss_tl