How to set a song from my music as ringtone in Iphone

Iphone does not accepts to set our music as a ring tone, its only allows to download ringtones from Itunes.

And Iphone supports only m4r format to set a ringtone.

we can convert our music to m4r format and import as a ringtone to our Itunes..

check the link below:

http://www.mp3-to-m4r.net/