gmtk is a toolkit library used by gnome-mplayer and gecko-mediaplayer: several common functions and routines formerly in gnome-mplayer and gecko-mediaplayer have been moved to this library. Since gmtk provides a complete set of widgets to control mplayer, it can also be used to quickly develop new GTK based media players.
WWW: http://kdekorte.googlepages.com/gmtk/