the album art work is found at the same time using the gracenote database. So it should download automatically. Otherwise, scan the image in, and then drag said image into the itunes>get info window
Alright, well I got the artwork directly from iTunes for most of my imported albums. However, there's one that says it couldn't find it... which I find strange because it's been out for a few months already now.
gracenote is a database where the track data, and album listings, artists info is kept, so itunes looks at the CD, and uses some clever decryption software, looks at the database and says, yes that one fits the bill about right, if multiple database entries could fit your CD, itunes gives you the choice to decide. Not every single CD in the whole world is on gracenote, although there is 95% of the music that most people listen to i would say.. It also does depend if the artist submitted their album to the database in the first place.
Creative were one of the pioneers i think of the database. Deffo one of the first.. Check it out on wikipedia.
Yes I forgot to clarify:
1. Gracenote Reads the CD
2. Connects to its Databse, find the information regarding the CD
3. Sends that to Apple and Apple matches the appropriate artwork