Attention! The album known sometimes as The Black Album is already in this database, it is correctly named simply Metallica. This is because The Black Album is only a fan-composed name. Please do not add it or rename it.
Both the infamous Garage Days (in the EPs section) and S&M (in the Live section) are also here, they're just a bit scattered.
Metallica has been selling Official/Live concert recordings on http://www.livemetallica.com since 2004-03-02. Please add a "X can be purchased for download at Y" relationship if you add one of these releases. For a list of which shows have already been added, check out http://wiki.musicbrainz.org/AaronCooper/LiveMetallica.