Ringtonesia iPhone 3GS Maker 3.00Free
Ringtonesia iPhone 3GS Maker is a ringtone maker that allows you to create ringtones for your iPhone 3GS from any video and audio file. The application can read many types of audio and video files (mp3, m4a, wav, avi, divx, xvid, flv, x264, vob, mpeg, DVD's, YouTube, etc.) and lets you create your own custom ringtones for your iPhone 3GS.
It is available for Windows and Mac.