I have both a audible driveway sensor that announces and a audio door bell the announces over my house speakers. On my previous system I combined this audio with the whole house audio with an analog ducker. Now with WiiM I would want both to override what ever is playing and play the audio feed from the message player via a analog input or I could change to a different announce method using a contact closure from the door bell and driveway sensor. I saw there are issues using the line in on the WiiM to auto switch. I am not planning on using the HDMI input I guess a could get a HDMI audio embedder to try it that way or is there a better way to do this....using some other magic box.... Thanks