iPod trouble - copying music from my iPod to another computer?

I’m going on a ski trip and my sister wanted me to burn a couple of CDs to listen to on the road. So I brought along my iPod from my home to my parents house. Now that I’m here and installed iTunes I cant transfer the music onto my parents HD. They’re all greyed out in iTunes.

Anyone know how I can solve this :S?

And I can’t go back home and save them as disc mode or whatever its called because my appartment is 100km from here :S.

Thanks!