cd music && cat chaos|struktur

find -type f -name "*.mp3"|while read f; do
artist=`id3tool "$f"|grep -i artist|cut -d ":" -f2`
title=`id3tool "$f"|grep -i title|cut -d ":" -f2`
filename=`echo $artist - $title.mp3`
[[ "filename" != "-.mp3 ]] && mv "$f" "$filename"
done