I originally loaded my son's iPod software on a company computer. I was laid off, and gave the computer back. I just loaded the correct disc/software on my home PC for his iPod. iMusic said something like, this version is different than the one on the iPod, do you want to load it. I said yes and lost ALL his music. Is there any way to get the music back that was on the iPod before I screwed it up?????