Your progress, custom key bindings, and library settings stay on the drive, not the host computer.
Who should skip it
The represents a frozen moment in music education software history. It is a testament to the demand for simple, portable, unrestricted learning tools. While it exists in a legal grey area, its popularity highlights a genuine user need: the desire to own, not rent, software, and to run it anywhere, anytime, without an internet leash. Synthesia V0.8.2 - W Portable And Registered Learning Pack