AMR sounds are recorded usually by some mobile phones and many users want to export them .mp3 audio files and essentially need to do amr to mp3 conversion. Some dedicated multimedia or audio converters offer the possibility of conversion between the AMR and MP3 audio formats, for example FreeMake Audio Converter or Miksoft Mobile Media Converter on Mac. You could use either a dedicated media converter program, or a general purpose audio editor like for example Audacity. But keep in mind that AMR is a format optimized for speech, not music.
Open AMR file Open MP3 file
A multifunctional media converter for Windows
A free multimedia converter in version for Mac
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Universal All Purpose Free Media, Audio & Video Converter Player Recorder
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