iPod Software to upload songs from ipod to PC

Hi there, I'm currently on the road with a brand new ipod. I have songs I hurridly uploaded before I left but I want to put some more on which I have collected while I've been away. I have registered myself to friends PC while I'm away from home but have been told that if I use her itunes it will take my songs off and upload hers and I don't want to lose my music. The way to stop this I've been told is to upload hacking software. I've looked up Anapod copy gear on the net which looks like it'll do the job but I'd rather not keep spending money on this damn thing as it's costing me a fortune. Do I have to or can anybody recommend some other software that will do the job just as well? Many thanks.