That's because GTK1 is getting old and its maintenance is getting harder. They took gtk1 and gtk1 based applications to playground repo.
Here are xmms source pisi packages: http://svn.pardus.org.tr/pardus/playground/applications/multimedia/
And here are gtk1 and glib1 source packages:
http://svn.pardus.org.tr/pardus/playground/desktop/gnome/







