Amazon.com: HDMI Audio Extractor 4K, Hdiwousp HDMI to HDMI Audio Optical Stereo 3.5mm Jack, HDMI Audio Converter with HDMI Cable to Toslink SPDIF AUX Output Support HDCP1.4 3D for PS4/Roku/Bul-Ray : Electronics
HDMI Audio Extractor,4K HDMI to HDMI with Audio 3.5mm AUX Stereo and L/R RCA Audio Out,HDMI Audio Converter Adapter Splitter Support 4K 1080P 3D Compatable for PS3 Xbox Fire Stick. - Walmart.com
Product - avedio links
Sonos Optical Audio Adapter Optical digital audio to HDMI adapter cable at Crutchfield
LiNKFOR HDMI Audio Extractor with Volume Control – LiNKFOR Store
USB-C® to HDMI Audio/Video Adapter Converter - 4K 30Hz - Black | Adapters and Couplers | Audio Video