Генерация *.m3u плейлиста из консоли

ootync@rtfm:/var/OOTYNC/MP3$ m3u-gen .
#EXTM3U
#EXTINF:311,Manowar — Number 1
Rock/Manowar/1996 - Louder Than Hell/05-Number 1.flac
#EXTINF:249,Manowar — The Power
Rock/Manowar/1996 - Louder Than Hell/10-The Power.flac
...

#!/usr/bin/env bash
 
#=== WELCOME
 
# Check binaries
requires="soxi mid3v2 vorbiscomment metaflac"
which $requires > /dev/null || { echo "E: These binaries are required: $requires" >&2 ; exit 1; }
 
# Help
function display_help(){
		cat <<-HELP
		Recursive M3U playlist generator with tag-reading.
		Usage: $(basename "$0") dir [dir]... > dir/playlist.m3u
		(c) o_O Tync, ICQ# 1227-700, Enjoy!
		HELP
		exit 0
}
[ $# -eq 0 ] && { display_help ; exit 0; }
 
#=== PROCESS
 
# Header
echo "#EXTM3U"
SED_KEYVAL='s~^([^=]+)=(.*)$~\1=\"\2\"~p'
 
# List all files
find $@ -regextype posix-extended -iregex ".*\.(mp3|flac|ogg)" \
	| while read file ; do
		declare -u ext
		ext=${file##*.}
		case "$ext" in
			"MP3")
				eval "$(mid3v2 "$file" | sed -rne "$SED_KEYVAL")"
				ARTIST="$TPE1"
				TITLE="$TIT2"
				;;
			"OGG")
				eval "$(vorbiscomment -l "$file" | sed -rne "$SED_KEYVAL")"
				;;
			"FLAC")
				eval "$(metaflac --export-tags-to='-' "$file" | sed -rne "$SED_KEYVAL")"
				;;
		esac
		length="$(soxi -D "$file" | cut -d . -f 1)"
		echo "#EXTINF:$length,$ARTIST — $TITLE"
		echo "$file"
	done