Your ringtone was just downloaded! Here's how to get it onto your iPhone.
              
                - You need to physically connect your iPhone to your computer. It’s odd, but there doesn’t seem to be any other way to do it.
 
                - After connecting your phone, open Music.app and find your phone in the sidebar on the left. Then drag the 
ringtone.m4r file onto the big white space in the center to add it. 
                - Now it’s a ringtone, and you can go to any contact, edit it, and set the ringtone to your newly added ringtone.