QML Viewer can't load QtMultimediaKit

[lhwpro]

Hi All

I development QT Quick App in windows.
I installed Qt_SDK_Win_offline_v1_1_4_en.exe as QT SDK for windows.
Then I did make for qt-mobility and install with mingw32-make.

Currently when I launch app as QT Quick Application for desktop in QT Creator, qt-mobility does work correctly.
But when I launch app(qml-only) as QT Quick UI in QML Viewer, QML Viewer outputs "plugin cannot be loaded for module "QtMultimediaKit": Cannot load library C:/QtSDK/Desktop/Qt/4.7.4/mingw/imports/QtMultimediaKit/declarative_multimediad.dll

declarative_multimediad.dll is does existing.
QtMultimediaKit plug-in is made successfully under C:\QtSDK\Desktop\Qt\4.7.4\mingw\imports after qt-mobility install.

Anyone knows the difference between qml app for desktop and qml-viewer?
I want to develop app using qt-mobility in qml viewer, NOT desktop app.

Thanks for reading