How setting multimedia playback speed in Qt Phonon

[coolx]

hello everyone!
I use the Qt Phonon in developing a multimedia player。
I need to set the playback speed, but I did not find the relevant API in Phonon::MediaObject or others class。
Does Qt Phonon support setting playback speed ？
Or what's the solution in Qt Phonon?

[koahnig]

There is no need of "double posting":http://qt-project.org/forums/viewthread/17444/
Closing this thread