Aimersoft M4R Converter is designed for iPhone ringtone, very professional M4R Converter. With it you can convert MP3 to M4R, AAC to M4R, Aiff/WMA to M4R, even it can help you convert all common video formats to M4R, such as AVI, MPEG, WMV, MP4, H.264/AVC, AVCHD, MKV, RM, MOV, XviD, 3GP to M4R.With this excellent M4R Converter, you can easily put the converted M4R file on your iPhoneiTunes. On the other hand, Aimersoft M4R Converter allows you to make, edit and manage your own ringtone for your iPhone by converting audio and video files to iPhone M4R ringtone. It is popular due to its User-friendly Interface and practical functions, in a word, this M4R Converter is your real assistant to convert MP3 and other audio and Video formats to M4R. Key Features: 1. Support all common video formatsAimersoft M4R Converter can convert AVI, MPEG, WMV, MP4, H.264/AVC, AVCHD, MKV, RM, MOV, XviD, 3GP to M4R for iPhone ringtone. 2. Support all common audio formats This M4R Converter supports converting WMA, WAV, RA, M4A, MP3 and other audio formats to M4R. 3. Support iphone, iphone 3G, iphone 3GsAimersoft M4R Converter filly supports iphone, iphone 3G, iphone 3Gs. 4. Get any clips from video and audio With this best M4R Converter, you can clip any segment from your files to iPhone as your ringtone by setting start time and end time, adjust ring volume and make the ringtone fade in and fade out. 5. Manage Added iPhone ringtones You can remove the added iPhone ringtone freely, and transfer the M4R files to your iPhone and iTunes. 6. Easy to use You need only a few clicks to accomplish the conversion process.