ITunes won't Sync All Songs On IPhone 4s?

I've tried time after time and I can't sync more than 22 songs from my iTunes onto my iPhone 4s. I know I have space as I only have a couple apps and pictures on my phone already and am only trying to transfer 158 songs onto my phone. I have the 16g iPhone 4s. Anyone have any ideas?

Check the sync only checked box.