The old 0.8 gconf schema was installed by gst-plugins-0.8. As the package was split into base, good, bad, ugly, etc., there seems to be no ebuild installing a gconf schema anymore. As a result, I can't set any settings for GStreamer 0.10.
emerge media-plugins/gst-plugins-gconf
My bad... forgot to add the -p flag to equery list when looking for it *groan*. Should this be a dependency of media-libs/gstreamer? "gconf" or "gnome" use-flag? PS sorry for wasting your time.