#!/bin/sh
#renames all files based on their ID3 tags

for file in *.mp3
do
        id3=$(id3ed -i "$file")

                title=$(echo "$id3" | grep songname)
                title=${title:10}

                track=$(echo "$id3" | grep tracknum)
                track=${track:10}
                if [ -n "$track" ]
                then
                        if [ "$track" -lt 10 ]
                        then
                                track="0$track"
                        fi
                        mv "$file" "$track - $title.mp3" -v
                else
                        echo "$file has no suitable track id"

                fi
done