/usr/share/applications/mixxx.desktop is in mixxx 1.11.0~dfsg-4.
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 8 9 10 11 | [Desktop Entry]
Version=1.0
Name=Mixxx
GenericName=Digital DJ interface
Comment=A digital DJ interface
Exec=mixxx
Terminal=false
Icon=mixxx-icon
Type=Application
StartupNotify=true
Categories=Qt;AudioVideo;Audio;
|