Optical input

I have an old Yamaha surround sound receiver (RX-V1) that doesn't have HDMI inputs. Is there a converter that can take HDMI output from a DVD player and convert it to an optical DVD input on the receiver? I don't want to lose audio fidelity if possible! Maybe it's time for a new receiver, but...

Hi I bought an LG 160w 2channel Sound bar 2430a. this has an optical cable included to connect to tv, but when I went home I realised my tv sharp lc 32ld145k does not have an optical input/output. There is a hdmi connection and usb connection along with a coax I think? But I dont know if...