$ sudo apt-get update
$ sudo apt-get install libqtscript4-phonon 

libqtscript4-phonon is installed in your system.

Make ensure the libqtscript4-phonon package were installed using the commands given below,

$ sudo dpkg-query -l | grep libqtscript4-phonon *

You will get with libqtscript4-phonon package name, version, architecture and description in a table

libqtscript4-phonon package basic information: