iPod ipod ripping problem

ok I'm using sentui or w/e for ripping though I think my ipod is messed up when I plug it in and go to the ipod in itunes all my songs are like faded grey and by where it shows how much room left there is a little lock

ps its configured for windows and this happend to on my windows machine but i thought nothing of it untill now when im trying to rip the sogs to my macbook and I know i could use a USB flash drive to transfer instead but i cant because recently broke my windws machine by accident so I only have my ipod