Question: how to make a song off itunes your ringtone on iphone?
Answer: Select the song from your iTunes library, right click and tap SONG INFO. [00:54]
Select OPTIONS. [01:04]
Change the STOP and START TIMES. Make sure that the total length of the ringtone doesn't exceed 30 seconds. [01:18]
Right click on the new song, select SHOW IN WINDOWS EXPLORER. [02:05]