Is it possible to override file-embedded album artwork with a freestanding JPG file?

[GreenMtnGringo]

Hi, I have a lot of albums that I ripped to FLAC many years ago. At the time, I was using ripping software that embedded artwork into the FLAC files. Many of these embedded images are extremely low resolution (7 to 10 KB). When I play these albums using Auralic Lightning LDS and Linn Kazoo, the low-resolution album cover image is displayed. Ideally, I would like to override these embedded cover images by downloading a higher-resolution image and storing it in the folder containing the FLAC files (as opposed to retagging every FLAC file). Is this possible? I tried it with one album folder and it did not work, but I may be misunderstanding the album art search order protocols discussed here:

https://minimserver.com/ug-library.html#Artwork

Thanks very much.