ITunes is a very useful application for Apple. It is used to manage multimedia files and transfer them into devices with system operating iOS . 
It 'a completely free software, with a simple and immediate. Allows you to manage music, to record CDs and buy songs on the Internet. 
Through iTunes you can also create custom ringtones for your iPhone . Just select your favorite song and convert the extension from mp3 to m4r. 
How? 
In this guide, we will explain in detail the steps to be taken. Read carefully the next steps and take note of the suggestions listed.

Make sure you have at hand:

Software iTunes

Music tracks

Pc Windows or MaciPhone

INSTALLATION OF ITUNES FOR WUINDOWS. 
If you have not yet installed the iTunes program on your PC, you have to go on the website of Apple. To the left of the page, fill in the field of the email and state your country. So, pressed the button "Download now". 
In a few seconds, you can run the application. 
This step is necessary only if you use Windows. Mac users, however, already have iTunes installed. 
Remember that the two versions for Mac and Windows are exactly alike.They have only a few differences in the aesthetic structure.