How to Create a iPhone RingTone of Any Song without using any Software
If you are looking to create a ringtone out of a Mp3 or music stored in your Hard drive, you can do it very easily with these basic steps, without using and third party software.

1. Add your favorite song file to your iTunes library.
2. Right click, select Get Info, then reach options tab.
3. Select start time and stop time for the duration of the ringtone you’d like to use (no longer than 40 seconds though). For example, if you’d like to use the first 40 seconds of a song, make the start time 0:00 and the end time 0:40. If you want to use from 1:40-2:20 then do it like that, just make sure you use which ever part of the song you want to be your ringtone and just make sure it doesn’t exceed 40 seconds. After you’ve selected which part of the song will be your ringer, click OK.
4. Right click the song, and click ‘Convert Selection to AAC’.
5. Go to your desktop, and make a folder called Ringtones. Once you’ve done that, go back to iTunes, right click the newly created clip and click copy. Paste it in the folder you just made.
6. Rename the file extention from .m4a to .m4r (you will have to enable “view file extention” from folder options)
7. Go back to iTunes, and delete the 40 second AAC clip you’ve made, but make sure that you keep the file!
8. Sync/Resync your iPhone, and it should automatically add the file to your ringtone folder.
And you are good to go!
Kudos to a good friend R.MAK @ Traveltowork for writing such a wonderful guide.






Now, how do you remove that ring tone from iphone’s custom ringtone?