How to show (extern) covers of single songs

[eusii]

Hi,
we are using Moode Audio 5.3.1 on a Raspberry Pi.

We have a list of single songs in one single folder. Like :

Folder
|- Artist A - Song 1.mp3
|- Artist B - Song 2.aac 
|- etc.

Now, whenever I click on a single song, I want to see the (extern, not embedded) image/cover that belongs to the song.

Therefore I added all the images with the same name to the list:

Artist A - Song 1.mp3
Artist A - Song 1.jpg
Artist B - Song 2.aac 
Artist B - Song 2.jpg

But this wont work right (I can only see the very first image for all songs)?

I know covers work for albums (just adding a cover.jpg to a album folder would display it for all audio files within).

But how does it work for many single songs in one folder (each audio file should have its own cover/image)?

Thanks,
eusi