So we all know that you will soon be able to add custom ringtones to your iPhone with iTunes 7.4, not to forget the additional cost of 99c for a song if you already have it and in case you don’t then the cost of adding a ringtone will be $1.98.
What if I tell you that with a simple hack you could add ringtones using iTunes free of cost? Yes, you pay Apple 0c thanks to one of the readers at Macrumors who has figured out a way to convert music files to ringtones in iTunes 7.4.
So how does it work? It is based on the fact that iTunes differentiates a song file and a ringtone by the file extension. While we all knew that the song file extension was AAC; the file extension for Ringtones is "M4R". So with that info I am sure the step by step from Macrumors which you are about to read is a no-brainer. Here is all you need to do:
For Windows and Mac:
1. To add a ringtone to your iPhone, using Windows Explorer or Finder just duplicate and rename any AAC file with a "M4R" extension, then double-click on it. This file will be added to your iTunes library automatically.