Artwork cover in local media files .mp3

Hello everybody,
Well question is quite easy. If I play a local media file (.mp3) which is stored in /media, through the browser media inside HA (a Google Hoe mini), it plays nicely but background of mediaplayer isn’t changed to show cover of Album/Artist. If, in same media device, I play anything from Spotify or Internet, cover is set automatically as background.
If I play same local file with another player out of HA, like Windows Media Player, cover is shown, so file is tagged rightly.
So, covers arent working with local media files?

Thank you in Advance!

Hi,

I struggle to get in to even play. Can you show me how you got that going?
I have declared a media -folder in configuration.yaml.