Phonon deployment on Windows XP //solved

[roxton]

Hello! I've compiled Qt 4.5 with Visual Studio 2008 with Phonon DS9 backend. At the machine where all path variables are set all works fine. But it doesn't work at the another machine.
I've put all main Qt dll's into the same directory with my program executable. The main program can be runned, but it shows a message:

WARNING: bool __thiscall Phonon::FactoryPrivate::createBackend(void) phonon back
end plugin could not be loaded

WARNING: bool __thiscall Phonon::FactoryPrivate::createBackend(void) phonon back
end plugin could not be loaded

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the phonon4.dll is in the same directory with the executable. The phonon_ds94.dll is in the /plugins/phonon_backend. What is wrong? As far I know Qt-apps must search the plugins at the plugins subdirectory by default.
I've tried to add the search path manually using the QApplication::addLibraryPath, but the result was the same. Also the SVG-icons doesn't work (without Qt path variable).
P.S. I've found a VStudio option to build without a hard dependency of libraries paths.