4Videosoft iPhone 4S Ringtone Maker for Mac can help you trim the ringtone length from the source audio/video/DVD and adjust the ringtone volume freely.
4Videosoft iPhone 4S Ringtone Maker for Mac
4Videosoft iPhone 4S Ringtone Maker for Mac is an professional and powerful iPhone 4S Ringtone Maker for Mac users, with which you can directly convert any popular audio/video/DVD file to iPhone 4S M4R ringtone on Mac. With this iPhone 4S Ringtone Maker for Mac, you can also add M4R ringtone to iPhone 4S directly.