Hi, I am new to apple. Got an 80gb ipod classic and a new macbook last week. I noticed that when I get album artwork from the apple store it comes up on every song that is on the album and shows up in my ipod as well. When the cover art is not in the apple store I go to amazon and drag it to itunes. It is only on the song that I put it on but it will show up in the coverflow for the whole album in my ipod and mac. What is the best way to get artwork and how much space does cover art actually take up in the computer?