FL Studio 11.0.3 Mac OS X.dmg file refers to the Crossover-wrapped beta version of FL Studio 11 for macOS
But then came the "Beta."
Native Support: Starting with version 20, FL Studio became a fully native macOS application, offering vastly superior performance and stability. FL Studio 11.0.3 Mac OS X.dmg
Using the 11.0.3 .dmg today is not recommended unless you are running a vintage Mac (pre-2019) with an older OS and specifically want the non-vectorial UI. For any modern production, the native Mac versions (20 and above) are significantly faster and more reliable. FL Studio 11
What's in the .dmg File?
He double-clicked on the ".dmg" file, and the installer window popped up. The installation process was smooth, and before he knew it, he had the latest version of FL Studio up and running. Bitcoin miners running in the background