If you are using an alternative platform you will need to download and compile the source code. All the code is in a single .c file which is written to be compiled with AVR-GCC. If you are running on a Windows PC you can download the following two packages and compile and program the application on to your board.
1) Download WINAVR
2) Download AVR Studio IDE
3) Create new avr-gcc project in AVR Studio and paste the source code into the initial .c file
4) Compile (creates .hex file to load onto target device)