If you have not done so already, you can download TouchCopy from here:Free TouchCopy Download For PC Free TouchCopy Download For Mac
With TouchCopy you can copy Ringtones from your iPhone to iTunes or your computer hard drive.
You need to be using TouchCopy version 12.04 or higher on the PC. Currently - Ringtones are not supported on the Mac version of TouchCopy.
Select the "Music" category from the list in TouchCopy. TouchCopy will show all the Audio and Video content on your iPhone.
If your iPhone contains any Ringtones, TouchCopy will now display a Ringtones icon. Click this to show all the ringtones on your iPhone.
You can now select and copy any Ringtones like you would with any other audio file in TouchCopy.