Ok, when I originally got my iPod it was formatted on the PC. Now I have a Mac. When I first plugged it in to the Mac I got a message saying it wasn't formatted for Mac. That was no problem, as we still had the PC.
However, a couple of months I tried it again in the Mac and it worked fine and could upload songs from my Mac. Last week we got rid of the PC and now suddenly, my Mac has decided it won't recognise my iPod.
What is going on? Any hints about what I could do, without deleting all the songs on my iPod.