
Now it is possible by GeoRing. This App helps you to put up any song as a ringtone fron your iTunes Library. GeoRing doesn’t require iTunes syncing, which means your phone can ring with any song right away.
To make ringing more fun, create a Ringtone Playlist with all your favorite songs and hear a new ringtone every time. GeoRing randomly picks a song from your playlist when your phone rings.

To set it up Just follow the Easy Steps Below and Apply them and enjoy:

The App is called GeoRing and it available in the App Store for $1.99.