Clementine is a port of Amarok 1.4 to QT 4, giving users an application that fits in well with KDE 4 while still resembling the previous version of the library-based music player. As I've commented in the past, acceptance of KDE 4 wasn't helped by the fact that the developers took it upon themselves to redesign some of the most popular apps such as Konqueror and Amarok.