Define a custom cover art image for a playlist

[Tarik]

Is there a way to tie a specific cover art image (a 500x500 jpg) to a specific playlist so that when I play it, it shows that image instead of each individual track's cover art?

[siainbuletin]

I would also like to know this. Basically emulating the functionality from modern music streaming platforms (Spotify, though I believe Apple Music copied this feature as well). I've been looking for a playlist format that supports specifying custom art for it. Only thing I found is XSPF, but there's actually been a feature request a long time ago for integrating XSPF support and it was rejected. I don't know if a possible workaround would be to perhaps have a custom WPS screen.