Transfer help nano 2nd gen Pink

Hello

I had to do a complete wipe on my Imac 17 inch and bring it back to default however i lost all the songs and they werent backed up but still on my Ipod and when i go to open I tunes it wants to delete them. How can i transfer them without losing them to the new itunes i had to install. The manual confused the heck out of me Thank you

 

oops thats 4 gig pink ipod sorry

 

is it the same for MAC cause all it has is directions for PC not Mac. no go. what else? not good for newer Generation Ipods

 

Its copying them over to Itunes great it worked thank you