How to force Finder to update file thumbnails? Recently I updated album covers in most of my mp3s, but their respective thumbnails on Finder did not get updated.

Things I tried:


Removed (rm ~/Library/Preferences/com.apple.finder.plist) without solving the issue at all
"touch"(ed) the files, which refreshed some - not all - the thumbnails


Any ideas on how to force a refresh of my mp3 thumbnail icons in Finder?

See the manifestation of this issue below:
Thumbnails are generated by QuickLook. You can reset its cache by typing qlmanage -r cache.

If this didn't work reset it completly with qlmanage -r.