Album Art Not Showing...???

I read all the posts/threads here about album art not showing up and I still can't find a solution.

I made sure to find/add artwork to all my songs in Itunes before opening and importing my music from Itunes to Rekordbox.

But still...no luck.

Most of the artwork is there but there is definitely artwork missing for a lot songs.

I am running the latest updates/versions of all my software.

I don't get it. Anyone find a solution or workaround....?

I am too lazy to go thru the internet to find album artwork just so I can add it to each song that does not have artwork.