How to Convert M4A to M4R on Windows 8, 7, Vista, XP? | idealshare

26 May 2013 ... M4A to M4R ringtone for iPhone 5, 4S, 4, 3GS, 3G solution! Solution 1: Convert . m4a to .m4r by iTunes 11; Solution 2: Convert M4A audio to ...

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