converting in Mac 10.13.6, an aifc to m4a, mp3, wav, or wma?

Transcode AIFC to MP3 Using iTunes

iTunes is usually used to transfer data from computer to iPhone, back up iOS devices, download contents and manage iOS files on computer. Actually, Apple has introduced MP3 Encoder into the latest version of iTunes for transcoding AIFC to MP3 simply.

Step 1: Open iTunes on your computer and up it to date. Head to Edit-> Preferences or iTunes-> Preferences to open the Preferences dialog.

Step 2: Go to the General tab, choose MP3 Encoder from the list of Import Using, and select a proper quality from the Setting option. Hit OK to back to the home interface.

Step 3: Highlight all AIFC files in iTunes Library, right click on one of them and choose Create MP3 Version to start converting AIFC to MP3 within iTunes.

Step 4: When it finishes, go to your iTunes Music Library, and you can distinguish the converted MP3 by file extension.

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Re-encode AIFC to MP3 by Finder on Mac

For Mac computer users, the Finder app is a good AIFC to MP3 encoder. It is a pre-installed utility, so you do not need to install anything on your device to achieve conversion.

Step 1: Start the Finder app on your Mac, navigate to the audio files you’d like to re-encode and select them.

Step 2: Right click on one of the selected file and choose Encode Selected Audio Files on the menu list.

Step 3: When the Encode dialog pops up, choose a proper quality from the Encoder dropdown list, like High Quality, iTunes Plus, Apple Lossless, or Spoken Podcast.

Step 4: Next, drop a destination to save the results and click the Continue button to begin re-encoding AIFC to MP3

AIFC to MP3 – 4 Ways to Convert AIFC to MP3 on Mac/Online/Windows (anymp4.com)