SPDIF coaxial digital audio cable (Phono RCA - 3.5 mm. Jack)
3.5mm Stereo Jack Male to 2 x RCA/Phono Female Audio Adapter | $6
Amazon.com: OBVIS 3.5mm to RCA Stereo Audio Cable Adapter - 3.5mm Female to Stereo RCA Male Bi-Directional AUX Auxiliary Male Headphone Jack Plug Y Splitter to Left/Right 2RCA Male Connector Plug Wire
3.5mm Jack Plug to 2 RCA PHONO Adapter Phone TV AMP Male Audio AUX Converter PC 5055538111563 | eBay