/usr/share/desktop-directories/ubuntustudio-audio-utiliy.directory is in ubuntustudio-menu 0.25.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | [Desktop Entry]
version=1.0
Type=Directory
Icon=applications-accessories
X-Ubuntu-Gettext-Domain=gnome-menus
Name=Audio Utilities
Comment=Utilities for Audio Production
|