Batch converting AIFF to WAV

If you want to go for a shell solution, you can do it with ffmpeg.

• Option 1: download ffmpeg and extract the executable ffmpeg file. Copy it to a directory that is in your executable path, e.g. /usr/bin.

  sudo cp ~/Downloads/ffmpeg /usr/bin/ffmpeg
  sudo chmod +x /usr/bin/ffmpeg
  

• Option 2: Use Homebrew and brew install ffmpeg.

Now, in the folder with the AIF files, run this:

for f in *.aiff; do ffmpeg -i "$f" "${f%.aiff}.wav"; done