gtkpod is a platform independent Graphical User Interface for Apple's 
iPod using GTK2. It supports the first to fifth Generation including 
the iPod mini, iPod Photo, iPod Shuffle, iPod nano, and iPod Video.

Requires libgnomecanvas available at SlackBuilds.org.

If you would like to add an AAC support to gtkpod, you will have to install
libmp4v2 library, which can be obtained at SlackBuilds.org as well. 

Make sure to install libmp4v2 prior to running gtkpod configure.