iCoolsoft M4R Converter for Mac

This M4R Converter Mac tool is the best software to convert files to M4R and convert M4R to other popular audio files, extract audio tracks from video to M4R files, create your own ringtones for iPhone, support almost all video or audio formats like AAC, AC3, AIFF, AMR, AU, FLAC, MP3, M4A, MP2, OGG, MKA, WAV, WMA, etc. and provide powerful editing functions.