RINGTONE
This how to make ring tones for your iPhone:
Choose the desired song from you library
Do a secondary click on your song if you are using a MAC (right click for PC)
Click "Get Info”
Go to Options tab
Set Start Time and Stop Time, some iOS only allow for a 30 sec duration for ringtones, then click OK
Do secondary click (right click for PC) to your selected song
Click "Create AAC Version", new song from your selected will added to your library (short one)
Do secondary click (right click for PC) to your short one (new song)
Click "Show in Finder”
Rename file *.m4a to *.m4r, click "use *.m4r”
Drag the file to library, for the first time it would automatically add your library with new folder "Tones" under Apps folder
Open the ring tones in the Tones folder of your library than drag it to your iPhone and your ringtone also would be automatically added "Tones" folder.
Last but not least, set the ring tone in your iPhone under the "Setting-Sound"
For information on how to make ringtones read http://www.ehow.com/how_2160460_custom-iphone-ringtones-free.html
Or
http://www.demogeek.com/2009/07/31/how-to-add-custom-ringtones-to-your-iphone/
How to sync ringtones to your iPhone - https://discussions.apple.com/docs/DOC-3792