Install libphonon4qt5-4 by entering the following commands in the terminal:
sudo apt update sudo apt install libphonon4qt5-4
Description:
multimedia framework from KDE using Qt 5 - core library
Phonon is a Qt 5 multimedia API, which provides a task-oriented abstraction layer for capturing, mixing, processing, and playing audio and video content. . This package contains the core library of the Phonon cross-platform multimedia framework from KDE. It is required to run applications that use Phonon.
Homepage: http://phonon.kde.org/
Version: 4:4.10.0-2
Section: universe/libs