No specific info about version 2013.4. Please visit the main page of MP3 Tag Encoding Converter on Mac Informer.
Convert apple music to mp3/aiff/wav/aac/flac/ alac with ID3 tags preserved.
Convert iTunes M4P, Apple Music to MP3 on Mac.
Convert DRM and DRM-free audio files into the most common audio formats.
It can convert any audio book files on iTunes to MP3, WAV and AAC.
It can convert all popular music formats into MP3 format.