AmpJuke can retrieve, store and display covers for albums using a webservice from last.fm. No coding is needed
! Just enable the feature on the configuration page. Read more
What's 'Display small images...' about ?
Enabling (checking) the setting "Display small images (albums/performers)", displays the image of an albumcover/performer, when you 'mouseover' the name of the album/performer.
In addition to enabling this personal setting, you (or perhaps the administrator of your AmpJuke box), must enable the automatic retrieval of album covers, as well as displaying related performers from last.fm.