How can I reinstall iLife 09?

I purchased a Macbook Pro in the early fall of 2009. Everything came pre-installed, including iLife 2009. My hard drive crashed and when I took it into the Genius bar, a few weeks later when I received it, I realized they had only installed iLife 2008. I took it in to the Genius Bar again because I could not find my software anywhere, and they reinstalled only iPhoto 09 and told me I could find the rest of iLife on my discs that came with my Mac when I found them.

Well, now I need some of the other iLife products and though I did find my discs, I know this sounds ridiculous, but I cannot find the software on any of them. I have my Mac OS X Install disc and my Applications install disc, and NO version of iLife are on these discs (that I can find). Any help would be much appreciated! I'm pretty sure I'm just overlooking it, but this has become terribly frustrating and I can't find any answers elsewhere...