How do i get my music from ipod to play onto Itunes?

Problems with my iPod and iTunes?

• I have a 4th Generation iPod Nano (8GB), like the one without the camera. I've had it for over 8 months, but suddenly an option called 'Voice Memo' has appeared in the main menu. It only appears now and then. I first noticed it a few weeks ago. I tried it out, but my iPod doesn't have a Mic so it was just a blank recording. Also all the music I have won't fit onto my iPod, so I leave about 400 songs unticked in my itunes. But as they are unticked, they won't get played while shuffle is on. I have to select the song myself. Even when I 'Search' the artist it won't play all the songs after each other. I have to click the exact song myself, then another, then another. How can I fix these things? I hope I made sense aswell!

• Answer:

  As for the iTunes, there really is no way to fix this without temporarily unchecking them.