just did it. kewl. ur welcome! 
WARNING: This process will take iTunes quite a while to perform. So do not do it if you don’t have time to let it sit and do its thing. Also, do not do this if you have one-of-a-kind album art or you have scanned in album art, or even if you have albums in your collection from local bands that you’ve spent 8 weeks trying to find album art for them. They will not be found by iTunes’ “get album art” feature. Also, you must have an iTunes Music Store account for this feature to work. That being said…
If you’d like to get new album art for your entire collection, and not just the albums you are missing (you can get brand new higher-res album art to replace that old-and-busted .GIF file you downloaded from Google Images), simply do the following few steps.
WARNING: This process will take iTunes quite a while to perform. So do not do it if you don’t have time to let it sit and do its thing. Also, do not do this if you have one-of-a-kind album art or you have scanned in album art, or even if you have albums in your collection from local bands that you’ve spent 8 weeks trying to find album art for them. They will not be found by iTunes’ “get album art” feature. Also, you must have an iTunes Music Store account for this feature to work. That being said…
If you’d like to get new album art for your entire collection, and not just the albums you are missing (you can get brand new higher-res album art to replace that old-and-busted .GIF file you downloaded from Google Images), simply do the following few steps.
- Open iTunes
- Select every song in your Music library
- Cntrl+Click (right-click on Windows or with normal two-button mice), and select “Get Info”
- Click YES or OK to the warning about editing multiple tracks
- Select the checkbox next to “Album Art” (making sure the box is empty)
- Click OK
