Greetings. I am trying to get into the podcast “The Big Picture” from “Ringer”. It’s available on apple services and you can download certain episodes. Unfortunately, I can’t locate it in the usual Sonos subscription services. So, to my question, when I make a folder “SONOSFILES” on my hard drive, I *am* able to link it in Sonos (i.e. I can find it in “my folders”) but when I go to search for the podcast file I place within that folder - a .mp3 - it is not there, even after updating the music library.