flactomp3 converts a directory of flac files into 320 mp3's. Installation instructions below.

flactomp3

#!/bin/sh

# Converts a directory of .flac files to the proprietary and lossy
# .mp3 format, retaining meta data.
#
# Note: Requires ffmpeg (brew/apt-get install ffmpeg)
#
# Use:
#
#    flactomp3 DIRECTORY
#
#

# Fail fast
set -e

# Check to see if ffmpeg is kickin it here
if [ ! -f `type -P` ]; then
    echo "You need to install ffmpeg (brew/apt-get install ffmpeg)"
    exit
fi

# Is the first argument there, is it a dir?
if [ ! $1 ] || [ ! -d $1 ]; then
    echo "Requires directory as first argument"
    exit
fi

# Are there flac files in there?
if [ `ls -1 $1/*.flac 2>/dev/null | wc -l` = 0 ]; then
    echo "There aren't any flac files in `pwd`/$1"
    exit
fi

echo "Starting conversion..."

for file in $1/*.flac;
do
    ffmpeg -i "$file" -ab 320k -map_metadata 0 "${file%.*}.mp3";
done

echo "Finished"