I am currently ripping my entire CD collection and use Picard to do the auto-retagging before I add the files to my Rhythmbox library. Occasionally Picard tags mp3s/flacs incorrectly (an album cover might be missing from a single track within an album for example).
As a result I add the missing piece of artwork using Rhythmbox properties but its not embedded into the file. is it possible to embed tags in Rhythmbox? If not what is the best approach to make these minor changes.
Another great tool is
kid3-qt
I use it sometimes.Though I use Guayadeque as default music player, it has everything built-in and can automatically embed tags into files.