Szerencsére a KDE multimédiás cuccokban az ilyen dolgokat, mint xine-engine, gstreamer pár kattintással lehet cserélgetni. Nincs bebetonozva, így nem kell más alkalmazást választanom, ha valamelyik backend csuklik. A gstreamer pedig a freedesktop project része. Az eredeti kérdésre pedig itt a válasz a FAQ-ból:
"While GStreamer is operated as an independent project, we do have a close relationship with the GNOME community. Many of our hackers consider themselves also to be members of the GNOME community. GStreamer is officialy bundled with the GNOME desktop, as lots of packages (like gnome-media, totem and rhythmbox) are using it. This does not exclude use of GStreamer by other communities at all, of course.
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... some of the KDE hackers have created Qt bindings of GStreamer, made a simple video player and using it in some audio players (JuK and AmaroK)."