How do you get songs from your Ipod onto another Itunes library?

I had to restore my computer to it's original settings and lost all my songs on Itunes and had to reinstall Itunes and now it won't let me put my songs onto this new Itunes library and I can't get to the old one to switch them so... yeah.How do you get songs from your Ipod onto another Itunes library?
if you have a PC google "iDump" and download it (it's free software-no trial bullshit), using iDump can get all of your songs if you are on a mac try Pod-to-Mac but isn't the friendliest free solution because in the free version you can only transfer 10 songs at a time :) hope this works :D