I found this cool app . You may or may have not seen it but seems to be nice.
www.iphoneringtonemaker.com
It's pretty neat and easy to use even if you can do it for free. Great thing about is thatyou can 3 FREE ringtones when you just try. Yes, you can try jailbreak but still this was super easy. This program works so easily and is totally awesome for adding ringtones. You don't have to do any complicated stuff to get your ringtones on your phone. Just download the program, edit the ringtone you want, send it to your phone, turn the phone off and back on and there is your ringtone. Absolutely great program, and so worth the small cost if you decide you want to buy it