New iPhone 4S problems with syncing music?

I just purchased a new iPhone 4S. I previously had an iTunes account for my old iTouch. When I plugged my iPhone into my computer, it asked if I wanted to sync my phone with my old iTouch information. I clicked yes, and it added all of the contacts from my iTouch. I have 980 songs, which all synced over as well. But when I went to my music section in my iPhone, all the songs were in light gray font and I couldn't select any of them. I re-synced my iPhone with my iTunes account, but I still can't select them on my phone. It's weird because the name of each song appears on my screen but I can't select it. Help me please. ):

The problem is not enough UNICORNS