How do I change my ringtone to a downloaded ringtone on a iPhone?
To change the ringtone to the downloaded one, right click on the song and choose "Get Info." Select on "options" and click on the ringtone clip. Once you make the selection, click the ringtone name file to make the change. Visit http://www.ehow.com/how_8215864_change-song-ringtone-iphone.html for more information.
settings / sounds /ringtone
You need to connect with a computer or through email some way.