Add cover art

Link external IDs of Congratulations, You Lose to MusicBrainz

Link external IDs of Dinosaur Jr. to MusicBrainz

Link external IDs of Oxnard Water Torture to MusicBrainz

Link external IDs of The Gates of Hell to MusicBrainz

Link external IDs of Cloud Surfing to MusicBrainz

Link external IDs of Free Money (interlude) to MusicBrainz

Link external IDs of Espionage to MusicBrainz

Link external IDs of Magic Dust to MusicBrainz

Link external IDs of Watch Out to MusicBrainz

Link external IDs of Just Doing Art to MusicBrainz

Link external IDs of You Should Join the Army to MusicBrainz

Link external IDs of Royal Hand to MusicBrainz

Link external IDs of Muffler Lung to MusicBrainz