How to Convert M4A to M4R as iPhone Ringtones
M4A to M4R Converter can convert M4A file to M4R within 30 seconds and load converted M4R ringtones to iPhone directly without iTunes. As a powerful M4A Ringtone Converter, it allows you to drag and drop slider bars to clip the M4A music that you like to change to M4R, and rename or remove ringtone from your iPhone directly.
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Convert M4A to M4R ringtone process
Download this M4A to M4R Converter, install it and run it.
Step 1: Load M4A files by clicking "Browse" button on right above of the M4A to M4R Converter software interface. 
Step 2: Click "Play", listen to the music and select your favorite segement . Then drag the start & end slider to clip the musi or reset start & end time in the corresponding text box directly.
Note: Pre-listen the M4A music before converting to M4R file to ensure it is just what you want.
Step 3: Set the output destination folder to save the converted M4R iPhone ringtone by clicking "Browse" button.
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Step 4: Click 
to converting M4A music to M4R .
Hint: This will not work with songs that has DRM (copy-protection). Your best bet is to use a song that you have imported from a CD.
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