I have my universal player that is connected via optical for digital and rca for analog to the avr. Recently kasi some of the sacds that i got are, i think, in analog and no sound would come out of the receiver since the analog marker would light up in the avr instead of digital. Sol i installed an rca cable which allowed the analog sound to come out at the avr. Will this be in anyway harmful to the avr? Or not? TIA for the advise.