I have a Skyview 10" display, along with the new Dynon radio and intercom. Everything works fine, I hear alerts from the Skyview and other audio components connected. The only thing that doesn't work is the MUSIC IN jack on the intercom. I have an MP3 player playing music and connected directly to my headset, but I want to hook it into the intercom, so my passenger hears the same music. Just no sound at all when inserting into the intercom. There shouldn't be any wiring involved for that to work, right? Any ideas?