If you don't have a PSX console, you can use an emulator to play the game on your computer. Popular emulators include ePSXe, PCSX-R, or RetroArch. Follow the emulator's setup instructions to configure the software.
To find the Italian version of the game, use specific search terms on your preferred search engine. "Harry Potter e la Pietra Filosofale PSX ISO ITA" "Harry Potter and the Sorcerer's Stone PSX ROM Italian" Download Harry Potter E La Pietra Filosofale Ita Psx Iso