[Qt-interest] How to upgrade included Phonon?

[Sagara Wijetunga]

Hi all

The version of the latest Phonon is 4.3.80. But the version included 
with the latest Qt 4.6.1 is Phonon 4.3.50!

Is there a documentation or a link outlining how to upgrade the Phonon 
in Qt? In absence of such a documentation or a link, could someone share 
how to upgrade Phonon?

Best regards
Sagara