Old thread, but a new problem for me. Thinking about trying this:
https://www.crutchfield.com/p_249CSUSB35/Crux-CS-USB3-5-Auxiliary-Input-Adapter.html?tp=1672
Price is ridiculous, however. #crutchfield
https://www.crutchfield.com/p_249CSUSB35/Crux-CS-USB3-5-Auxiliary-Input-Adapter.html?tp=1672
Price is ridiculous, however. #crutchfield