Album Artwork Assistant finds album cover artwork on the Internet and adds it to music track files in iTunes.
The main feature the developer of the program needed was a batch queue. When the hard disk on which all music is kept crashes, you need to re-rip a fairly big CD collection. After the ripping, you need to add the album artwork to all tracks again. Embedding is a slow process that blocks iTunes. That is why the developer wanted a tool with a queue, so that there was a possibility to search for a large number of CD covers quickly and then let the program process the queue unattended while important things may be done.