IPhone 4S and iTunes problem?

Every time I sync my iPhone certain music isn't syncing. These songs used to but now aren't for some reason. Some songs are on there but it just won't sync the others.

I'm running iOS 6 on my iPhone 4S and iTunes 10.7 on Lion on a Mac Mini 2011 i5.

I have got an almost FREE tablet. It's called the iTablet. The Ancient Egyptians used state of the art technology clay tablets called, iTablets. These cost anywhere between 3-5 slaves at the time. These days you can pick a clay tablet up for little cost. Get some clay and flatten it. Cook said clay. Wa-la! Bingo! Your new iTablet. Only downside is it does not support multitasking… But on the bright side it can run iPhone apps.

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