[Qt-interest] Proper way to #include Phonon headers

[Nikos Chantziaras]

It seems I'm not able to install Qt's Phonon module because I have KDE4 
installed which installs Phonon on its own.

However, this results in:

   Phonon/MediaObject: No such file or directory

If I try to #include <Phonon/MediaObject>.

So, what is the correct way to include Phonon headers that will allow 
the application to compile and run on both KDE as well as non-KDE systems?