Pioneer out of mothballs.

If you mean an SX-1280, no.  It does not accept a digital input.  You would have to run a 3.5mm to L/R RCA connector from the analog audio out of the computer to the auxiliary input of the receiver.  Good luck & happy listening!

I tried this from Amazon Tendak Digital to Analog Converter Adapter Optical Audio 2 TOSLINK SPDIF + 2 Coaxial to TOSLINK with L/R RCA and 3.5mm Stereo Audio Switcher, but I sent it back not trying the 3.5, only the 2 coaxial. Maybe shame on me?

Thanks eff for your response,it was very helpful. I re-ordered another unit w/3.5 to rca cable, lets see if this works.