How do you get Mezzmo to read season posters for TV series?

So far I have "folder.jpg" images in the "Season XX" subfolders plus I have season image files in Kodi fashion with the "tvshow.nfo" files but if I create an active playlist with a season field Mezzmo runs off to the internet and downloads a bunch of inappropriate images.

http://kodi.wiki/view/artwork
Season images reside inside the tvshow folder
- season[XX]-(poster/banner/fanart).(png/jpg)
- season-all-(poster/banner/fanart).(png/jpg}
- season-specials-(poster/banner/fanart).(png/jpg)