I had a similar problem, computer crashed, hard drive knackered, & wanted to stick the stuff from my ipod back in i-tunes, I used the linky thing downloaded the program, but being a tight Yorkshire lad hadn't realised that you'd have to pay for it after the 1st 100 tracks! Anyway I tried removing the program & reinstalling it, but I couldn't use it for free anymore! I've just reinstalled on a different p.c & it works a treat, using the manual mode I have taken the stuff that I haven't got on cd etc. I wonder how the other lad got on.
Since the last HD crash I make backups to an external hard drive, but just out of interest, if my pc hard drive crashes again, will I be able to recover the itunes stuff too?