OSMC Album Art Not Showing

Hey, I’m new and I Think I’ve run into a compatibility problem. According to the Kodi Wiki: http://kodi.wiki/wiki/Artwork

I’m Not running a network, wifi or any of that. All my videos (Which works with filename-poster.jpg) and music is dumped on one flash drive, and It doesn’t seem to work with the example shown. To get album art, I Have to dump the music into seperate folders with “folder.jpg”. How cn I Fix this if I’m running no WiFi? :confused: