In brief
The original installation floppy is no longer readable today. A working copy of the program survives on CD and allows the environment to be reconstructed in an emulator — but the program image itself is not distributed from this site. This is a deliberate choice: the site documents the software and its history, rather than redistributing the software itself.
What may be shared here in the future is limited to the author's own original-content material — custom fonts and icons created for µOS, and documentation write-ups — once their format and licensing terms have been settled.