Sorry.. None of our converters can convert these formats... :(
Sorry! We were unable to find any converter site or software that matches your search: 'convert audio: m4r to sfm'. We are constantly on the lookout for new converters so please check again later or request that we add this file-format to our service here.
A M4R extension is the extension given to a ringtone file, created for the iPhone by Apple Inc. Basically, a M4R file is just a M4A file that has been renamed. All music files can be converted to an iPhoe ringtone by renaming a music clip of maximum 30 second length to .M4R. Import the […] Learn more about m4r