Puting deleted music onto cd from my ipod?!!!!!!!!!!!!!!!!!!!!!???

somebody sent me some rare mp3s via a link online which i then put on my ipod but then my computer got a virus and crashed, wiping all of my music. i now have the rare music on my ipod but want to burn to disc but cant do it as it says on itunes that the music "cant be found" - is there anyway to get the music from my ipod onto a disc???