/usr/lib/ is in libphonon-dev 4:4.6.0.0-3.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/qt4/plugins/
/usr/lib/x86_64-linux-gnu/qt4/
/usr/lib/x86_64-linux-gnu/qt4/plugins/designer/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/phonon.pc
/usr/lib/x86_64-linux-gnu/qt4/plugins/designer/libphononwidgets.so
/usr/lib/x86_64-linux-gnu/cmake/
/usr/lib/x86_64-linux-gnu/cmake/phonon/
/usr/lib/x86_64-linux-gnu/cmake/phonon/PhononConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/phonon/PhononTargets-debian.cmake
/usr/lib/x86_64-linux-gnu/cmake/phonon/PhononTargets.cmake
/usr/lib/x86_64-linux-gnu/cmake/phonon/PhononConfigVersion.cmake
/usr/lib/x86_64-linux-gnu/libphonon.so