Create MPEG-4 Audio files from CUE sheet music

cue2aac

#!/bin/bash

if [ $# -lt 1 ]
then
	exit
fi
cue_file=$1
wav_file=$(cat $cue_file | grep FILE | sed -e "s/^FILE \"\(.*\)\".*$/\1/")

cuebreakpoints "$cue_file" | shntool split "$wav_file"
find -name "split-*.wav" -exec neroAacEnc -cbr 512000 -if {} -of {}.m4a \;

ntrack=$(cueprint -d "%N" "$cue_file")
trackno=1

fields="TITLE ALBUM ARTIST COMMENT GENRE TRACKNUMBER"

TITLE="%t"
ALBUM="%T"
ARTIST="%p"
COMMENT="%c"
GENRE="%g"
TRACKNUMBER="%n"

for file in $(ls split-*.m4a)
do
	for field in $fields
	do
		value=$(cueprint -n $trackno -t $(eval echo \$$field) "$cue_file")

		if [ -n "$value" ]
		then
			case $field in
				TITLE)
					mp4tags -s "$value" "$file"
					title="$value"
					;;
				ALBUM)
					mp4tags -A "$value" "$file"
					;;
				ARTIST)
					mp4tags -a "$value" "$file"
					;;
				COMMENT)
					mp4tags -c "$value" "$file"
					;;
				GENRE)
					mp4tags -g "$value" "$file"
					;;
				TRACKNUMBER)
					mp4tags -t "$value" "$file"
					;;
			esac
		fi
	done

	if [ -n "$title" ]
	then
		mv "$file" $(if [ $trackno -lt 10 ]; then echo 0; fi)$trackno" - $title".m4a
	fi

	trackno=$(($trackno + 1))
done

rm split-*.wav