Firetv Musicvisulation.xml location

Long time lurker. I have been using Kodi (XBMC) since I modded the original xbox. In the past I have been able to get my answers through searching the forums or the web. However, I’m very frustrated in attempting to do a simple edit of the new Kodi 17 Estuary Musicvisulation file on the FireTV II. Easy Pesy in Windows. For the life of me I cannot find the file using file explorer, remote share, adblink, putty, etc. and copy to PC edit, copy back.
With the new skin you can mod the file to display album art in full screen something I’ve been searching to do since PMII. My 2 biggest quests with XBMC/Kodi have been full screen album art and the ability to shuffle music and videos together. I have over 4k music videos, and it would be nice to add a shuffle button to the Now Playing video OSD.
Any help greatly appreciated.