Not sure what Big System Means?? Are you trying to connect physical cables? like a pair of RCA inputs? What Alexa device (Echo)? Normally you can connect the Alexa device via a 1/8 audio jack cable to RCA.
Amazon abilities but with digital output... Sonos?
I want something that operates like Alexa but plays on my big system without having to hit buttons etc.. I'm going to use this in a private gym. My clients often come in alone. I want them to be able to walk in, tell Alexa (or whoever) to play Simon & Garfunkle and it plays on the main system.
All Alexa devices only have analog outs.. Thoughts? Ideas?