Xilisoft iPhone Ringtone Maker for Mac lets you convert favorite music/ songs in WMA, WAV, RA, M4A, MP3 formats to M4R iPhone ringtones. It can also extract from AVI, WMV, DivX, MP4, H.264/AVC, MKV, XviD, 3GP, MPEG, etc to M4R iPhone ringtone.