the author of this app says:
This is a KDE/Qt based graphical front-end for managing songs and playlists on an Apple iPod. It uses the tools from the gnupod project developed by Adrian Ulrich. The program follows the same approach but provides extra features like multiple playlist management, editing and sorting based on artist, album and title information. Song addition, deletion and playlist manipulation are managed internally by GUIPod even though it uses three external gnupod scripts which are bundled as part of the GUIPod distribution. GUIPod is compatible with gnupod 0.2 version.