Here's the latest -Current changelog:
Sat Nov 7 22:09:46 UTC 2009
Phonon in Qt is missing support files needed by KDE, so this package restores the missing pieces. The Phonon library, include files, and pkgconfig files will remain in the Qt package, as those are the most up-to-date versions. This package will contain the xine and gstreamer backends and other files needed by KDE. The gstreamer backend source is taken from the newer sources in Qt, not from the standalone Phonon.
Sorry about the misfire last time... this stuff should work. :-)
Use -phonon -no-phonon-backend options.