My Ipod won't sync.....

I haven't been able to find an answer to this specific problem... I've just added a couple new albums to my itunes library. When I try to sync my ipod to the library, it acts like it's syncing like normal (and this registers on the ipod itself) but then when it's finished, there are no new songs on the ipod! I can't even sync it to take songs off! Any solution to this problem? I've tried the reset thing already. Thanks in advance!