As for hardware you only need the UNO, or a rough equivalent (which likely will not work, because this thing uses registers that might only work this way on atmega328, I'm pretty sure), , any speaker ...

This Arduino BASIC interpreter will make a really fun one-day project if you’ve already got the parts on hand. [Usmar A. Padow] put together an Arduino Uno, SD card, four line character LCD, … ...