iCoolsoft M4R Converter for Mac is a powerful Mac M4R converter tool, that can create M4R ringtone files for iPhone.It can convert MP3 to M4R, AAC to M4R, M4R to MP3, and so on.

You can also use it to split and merge files to customize the output M4R files.

This Mac M4R Converter can help you convert songs of any format to M4R files and extract audio parts from videos and convert to M4R ringtones.You are allowed to adjust the M4R sound quality, and edit source files to specify any segment to convert.

This M4R Converter Mac tool is the best software to convert files to M4R and convert M4R to other popular audio files.Have a try with it and convert all music files to iphone ringtones.