How to make Custom iPhone ringtones

For all you iPhone users check this site out for instructions to make custom iPhone ringtones from your pre-existing collection of mp3s:

http://www.ehow.com/how_2160460_custom-iphone-ringtones-free.html

Pretty easy to do and my favourite I made last night has to be the Simpsons theme song Cuban style.

Also, you could use your VoiceMemos app, which will sync with iTunes, find the "VoiceMemo" folder and follow the same instructions to create your own ringtone. Pretty creepy, but imagine having your phone recite any recorded message in your own voice.