You can transfer songs from your ipod directly to a new computer. Without a 3rd party app. It is labor intensive but has saved me from having to re - rip hundreds of cd's in the past.
First you have to have windows set to show hidden folders
plug in your Ipod, if itunes auto starts close it out
Start Menu > my computer > ipod so your ipod is open in a window as if it is a flash drive
With hidden folders set to show there should be a ghosty folder called music folder or something.
You need to click and drag that folder to your my music folder
once it is done saving ( which can take a while depending on how much music you have on your pod)
You'll be able to open that folder in your my music folder
The songs will all have weird names and such and it usually saves them into multiple folders.
Open itunes back up and start opening individual folders and selecting all files within the folder and drag them into your library on itunes, it will add them
then repeat thru all folders.
last time I did it I had 76 folders to do this with, it took a while, but still faster than re ripping cds etc.
Do not move that folder once you have added all of the songs to itunes, as itunes remembers them in the directory you pulled them out of so if you move that folder out of My Music itunes wont be able to play the song because it wont know where the folder is.
Hope that helps.