There are a lot of MP3 conversion tools, here is a small series of "fast-rotating Video Converter" As an example, teach you how to convert MP3 format music to the desired m4r format.
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1, first of all need to download the MP3 music ready in the computer, and then download the installation of "Fast transfer Video Converter", interested friends, can search the internet to download;
2, open the Conversion tool, and then the left side of the tool can see the supported conversion format. Since we need to convert the music to m4r format, we first open the "m4r" button on the left, as shown in the following figure.
3, then in the open window to find the need to convert the MP3 music files, and then click the "Open" conversion button, as shown in the following figure.
4, click on the conversion, waiting for a while to see MP3 successfully converted to M4R format, we can be prompted on the right side of the message, find the converted m4r format music files stored path, and then open to find their own files.
Well, here we are successfully getting the M4R format music you need, and you can import it into your phone as a ringtone.