I have an Echo Link connected to the audio in on a Core 5. I know that the controller is receiving audio from the Link because I programed a light to turn on when audio is sensed and off when it is not. My issue is, I can not hear the audio. All my connections in Composer are correct and when I ask Alexa to play music, the Echo Link is selected in the room. The three outputs from the controller are connected to a matrix with audio sensing and I can see that the controller is not sending audio from any of the outputs when the Link is selected. I can play digital audio like Pandora, TuneIn, etc. and announcements from the controller. Why can I not hear the audio I am sending to the audio in?