Wondershare Ringtone Maker for Mac is a professional software that can provide iPhone users with free and convenient iPhone ringtone making service. Key Features: 1.Convert Various Audio/Video Formats Convert virtually any audio or video format, such as MP3, WAV, WMA, M4A, AC3, MTS, TS, M2TS, MOD, TOD, WMV, MKV.No matter what format it is, just drag it in. 2.Accurate trimming with Wave-form The wave-form can help you choose the favorite parts of a song/video and set the start/end points more accurately. 3.Just 1-Click Transfer With just 1-click, the ringtone made will be instantly transferred to your iPhone. You can also choose to transfer it to your iTunes. 4.Ringtone Manager The Ringtone Manager allows you to transfer ringtones between iTunes and iPhone conveniently. You can also delete or pre-listen to the ringtone with it. 5.Direct Connection with iTunes An optimized iTunes Library on the left of the interface helps you make and manage your ringtones conveniently. 6.Add Fade in /out Effect This function allows you to add fade in /out effect for the beginning and ending of your ringtone with up to 5-second fades.