tagged information from your music collection into a MySQL-database. A lot of configurable options exists in order to fine-tune the operation. 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.