To add, remove and change album artwork, select a track (or multiple tracks), right click and select Edit. The track edit window will appear. Go to the artwork tab.
The list shows the sizes of artwork your iPod uses.
To change the artwork click the 'Add Artwork' or 'Change Artwork' button, and select an image file from your PC to import. SharePod will replace all artwork sizes with the new artwork, regardless of what size you have selected in the list.
To remove all artwork from the selected track/tracks click the 'Remove artwork' button.