I had it set to "Download album cover artwork and overwrite any existing track data". After I did the initial Rescan with that plugin, I set it to "Download album cover artwork and fill in missing track data."
-- Missing Album Covers Display as Wrong Album https://launchpad.net/bugs/52059 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs