SOUTHSKY Audio Converter, Stereo Analog to Digital Converter Adapter, 3.5mm Aux Jack R/L 2 RCA Cinch to SPDIF,Toslink, Optical,Coaxial Converter: Amazon.com: Industrial & Scientific
Optical Coaxial Toslink Digital to Analog Audio Converter Adapter RCA L/R 3.5mm - Walmart.com