===== flac to mp3 =====

one off:
<code>ffmpeg -i "file.flac" -ab 320k -map_metadata 0 -id3v2_version 3 "file.mp3"</code>

bash loop:
<code>for f in *.flac; do ffmpeg -i "$f" -ab 320k -map_metadata 0 -id3v2_version 3 "${f%.*}.mp3"; done</code>