My Ringtone is the NY Rangers Goal song... Go to settings sounds and the ringtones. Mine was a special download. You can use the stock ones or go to iTunes and purchase ones as well
My current general ringtone is the intro to John Fogerty's "Centerfield", in honor of the start of the national pastime's season. I also have custom, unique dedicated ringtones for each of my immediate family members and a few friends.
To put ringtones on your phone, you must either purchase them from the iTunes store or sync them to your iPhone through iTunes.