I did it the really slow way.
Basically, you go on Google and type in the name of the album. Copy the album picture that pops up.
Go into iTunes and go in "Get info". Go to "Artwork" and paste the album on for your artwork.
Hopefully you should have lots of albums rather than single songs like I do, and it won't be as hard.
Good luck and just be patience! It's better once you do all of them, then when you get a new song/album, you only have to do them.
Basically, you go on Google and type in the name of the album. Copy the album picture that pops up.
Go into iTunes and go in "Get info". Go to "Artwork" and paste the album on for your artwork.
Hopefully you should have lots of albums rather than single songs like I do, and it won't be as hard.
Good luck and just be patience! It's better once you do all of them, then when you get a new song/album, you only have to do them.