I made some ringtones via Garageband on and old Mac and transfered them to my iPhone.
I no longer have that Mac and therefore no longer have those ringtones. (should've backed them up, I know)
Does anyone know how to get them back off my iPhone?
Running OS X Mountain Lion
You'll need third-party software, like this, to extract them, as Apple makes no provision to do so:
Retrieving data ...