/usr/ is in libqmmpui-dev 0.5.2-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/qmmpui/
/usr/include/qmmpui/generalfactory.h
/usr/include/qmmpui/general.h
/usr/include/qmmpui/generalhandler.h
/usr/include/qmmpui/playlistformat.h
/usr/include/qmmpui/playlistparser.h
/usr/include/qmmpui/commandlinemanager.h
/usr/include/qmmpui/commandlineoption.h
/usr/include/qmmpui/filedialog.h
/usr/include/qmmpui/filedialogfactory.h
/usr/include/qmmpui/playlistitem.h
/usr/include/qmmpui/playlistmodel.h
/usr/include/qmmpui/mediaplayer.h
/usr/include/qmmpui/detailsdialog.h
/usr/include/qmmpui/playlistmanager.h
/usr/include/qmmpui/metadataformatter.h
/usr/include/qmmpui/templateeditor.h
/usr/lib/
/usr/share/
/usr/share/doc/
/usr/share/doc/libqmmpui-dev/
/usr/share/doc/libqmmpui-dev/copyright
/usr/lib/libqmmpui.so
/usr/share/doc/libqmmpui-dev/changelog.Debian.gz