Thanks for the request! I don't know if the code is transferable to the older iPod's, but I'll be sure to mention that to the tech team. If it is transferable, it should be quite easy to implement!
Looks like I may be wrong...There are games for the classic, but not really any applications. I don't know if this is Apple's choice, or just because nobody's bothered to develop any applications for it. I'm chasing this up with some contacts who've developed games for the classic.