Software for the genious (discontinued) Sifteo Cubes are found in the link below: http://doctormikereddy.com/sifteo-resurrecting-a-legend/ Creds to mike, who went through the laborous process of collecting all the software, and the hacks to make it work!
Follow the included instructions carefully! You'll find them in the included readme.
What is Sifteo? https://www.youtube.com/watch?v=Fvc_6rd2Trw