I'm trying to connect my Sony surround sound to my TV so I can listen to concerts. The sound system is connected to the DVD recorder with an optical cable, but no optical connector on TV. I've connected the DVD recorder with the TV via Scart but the sound system doesn't work then. The sound system does work playing a DVD so I know its working.
The DVD recorder doesn't have an HDMI port (its a little old). The USB on the TV is taken by a Wifi dongle. What cable do I have to get to connect the DVD (and sound system) to the TV so I can use the sound system for watching TV?
And what settings do i need on the TV to make this work?

Sorry, i'm a user and not very technical....

Look forward to hearing.
Thanks