4Videosoft iPhone 4 Ringtone Maker for Mac is one amazing yet easy to use iPhone, iPhone 3GS, iPhone 4, iPhone OS 3.0/3.1 Ringtone Maker for Mac users. It provides the easiest way to convert AVI, MPEG, WMV, MOV, RM, RMVB, MP4 to M4R iPhone 4 Ringtone, along with the function to convert WAV, WMA, RA, M4A, AC3, and MP3 to M4R iPhone 4 Ringtone.

Easily convert any segment of your video/audio to M4R iPhone 4 Ringtone by specifying the start time and end time or dragging the slide bar. In addition, you can pre-listen the Ringtone before the conversion, even edit your added iPhone 4 ringtone. All the steps are just like a breeze.