Convert many kinds of Windows media files to m4r (iPhone ringtone) mmf amr or mp3 in batch mode and high speed. From including RM RAM RMVB avi mpeg wma asf and wave format. Convert all to m4r (iPhone ringtone). Convert rm to mp3, ram to mp3, rmvb to mp3, avi to mp3, mpeg to mp3, asf to mp3, wma to mp3 and wave to mp3, and mp3 to mmf, mp3 to amr-nb, mp3 to amr-wb, wav to amr-nb, wav to amr-wb, mmf to amr-nb, mmf to amr-wb, avi to mmf, avi to amr-nb, avi to amr-wb, mpeg to mmf, mpeg to amr-nb, mpeg to amr-wb. Batch convert audio/video to m4r (iPhone ringtone), mp3, mmf (smaf format), amr-nb, amr-wb and wave.