EZ2ON REBOOT: R on Steam. This is an official, modern remake by the spiritual successors to Amuseworld. However, it uses a different 4-key layout and an online subscription model. Many purists still want the original arcade 5-key feel.
Searching for an typically refers to one of three things: the modern official PC reboot, legacy emulated arcade files, or the discontinued online version. While the arcade original is legendary for its difficulty and specialized hardware, the modern way to "download" and play the series is through the officially supported EZ2ON REBOOT : R on Steam. The Evolution of EZ2DJ: Arcade to PC ez2dj download
If you manage to get the game running (via emulation or the Steam client), here are the defining features players look for: EZ2ON REBOOT: R on Steam