I have a iPod (5th generation Late 2006) and in my iTunes I have about 30 different podcasts with each about 15-20 episodes in each. I understand that iYunes will stop downloading new episodes if I stop listening but my iPod is only showing 12 different Podcasts. Why won't it list all of my podcasts on my iPod? I can see them all and they will play on iTunes but they don't even show up on my iPod. Why is this??