As far as I know, Default is the only theme that shows the channels separately from the audio format. I believe that the themes need to be updated with the new mappings in order to work.
It depends on how a theme does the MediaInfo icons.
If they use the MediaInfoPanel from core they will show the new icon automatically.
This includes Diamond, Chocolate, Simplicity and Carbon. Im not sure how all the other themes do it.
I didn’t add this one to Subdued yet. On certain view styles, things were getting visually crowded if an item was displaying all 6 of the icons. I’m considering exposing options to enable/disable individual media info icons and leave it up to the user to pick a set that will fit in their particual view style and layout.
Ah… that would explain it. Thanks for the quick reply and possible upcoming features!