Preview: Audio Files not showing Thumbnail

Hello,

I have had this issue for quite a long time now; it is really bothering me.

I have mp3 and m4v audio files on my computer, and all of them are my music that I listen to. They have their own thumbnail and covert art. When I open them in iTunes, I can see the cover art, but when I open Finder, all I see is default white icon with the iTunes logo. How do I fix this? Please somebody help. Thank you.

Things I have tried so far:

Resetting Finder (deleted com.apple.finder etc.)

Resetting Quicklook (deleted com.apple.quicklookdaemon etc.)

Checked the show in icons box in Finder.

I have the latest 10.13.1 macOS High Sierra and I tried resetting my computer many times.

Thanks all.