can I transfer music from ipod to itunes after reinstalling itunes on computer?

Recently had to factory restore my computer after detecting a nasty bug which wiped out everything I had on my computer. Is there a way to download my music from my Ipod touch to my computer? I haven't had any luck by plugging my Ipod to the computer via USB cord and am wondering if there is a way to do it at all without having to manually download the cd's myself? Thanks!

Morgan