iTunes says I don't have enough space, iPhone is out of sync with iTunes library
Hi,
My laptop recently crashed and got reformated which meant all my iTunes data had to be redone and I've managed to put back all the music and etc back into my library. However, when I tried to sync my iPhone 4 it came up with not enough space (see photos below) but I have more than over 8GB space free. I clicked individual playlist to sync and it showed that it's duplicated all the songs. So instead of going over all previous data, iTunes seems to be just adding in everything in my library. It seems that my iPhone has become out of sync with my laptop library.
I really don't want to restore my iPhone because I have loads of conversations on my Whatsapp and other application data that I don't want to wipe out, can someone help me with this issue?
All the help is much appreciated!
iPhone 4