Embedded Artwork
I use one of the Scripts from that site for embedding artwork in the iTunes file. If you import your own artwork then it is embedded with the file. However if you use the iTunes - Advance - Get Album Artwork feature to fill in artwork it is not embedded with the file. My understanding is this could be a problem if you have to move your library or restore your library. The problem would be if iTunes no longer has the artwork then you are stuck. By ensuring all artwork is embedded you will always have it with the file.
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