Hi,
I just bought a fancy new LG OLED TV and of course it doesn't have any audio hookup other than optical digital audio out. I simply want to connect my axiom speakers via my old school 80s receiver like I had with my old tv (which is only analog R/L audio hookup ups) . I see online there's little converters - does anyone have any advice about what one to buy or what ppl do in this case?

There's quite a few different RCA to Optical\Digital converters available. Mono price or in Canada Prime cables have a few models with good reviews quite cheap too.

Those type units are about the only option without updating to a newer AVR.