Convert all flac files in a folder/subfolders to mp3

convert_all_flac_to_mp3.sh

for f in ./**/*.flac; do 
    # echo $f;
    DIR=$(dirname "$f");
    NAME=$(basename "$f" | cut -d'.' -f1);
    sox "${f}" -C 320 -S "${DIR}/${NAME}.mp3"
done

# or

# handles filenames with spaces
find . -type f -name "*.m4a" -print0 | while IFS= read -r -d '' f; do
    DIR=$(dirname "$f" | sed 's/[[:space:]]//g'); echo DIR ${DIR};
    NAME=$(basename "$f" | cut -d'.' -f1 | sed 's/[[:space:]]//g'); echo NAME ${NAME};
    mkdir -p "/tmp/00_converted_mp3/${DIR}";
    # cp "${f}" "/tmp/00_copied_mp3_mnms"
    # sox "${f}" -C 320 -S "00_converted_mp3/${DIR}/${NAME}.mp3"
    ffmpeg -n -i "${f}" -acodec libmp3lame -aq 2 "/tmp/00_converted_mp3/${DIR}/${NAME}.mp3"
done