There are a couple of ways to do this: you can buy a cheapie D/A converter - use the tousling digital out of the TV to go into the D/A and use the analog out
of the D/A to go into your system. You can also use the headphone out of the TV through a dongle and use analog patch cords to connect to the dongle and to your system. Make sure you have turned off the speakers in the TV and then increase the volume almost to its full output or you may not hear too much.