Just found a little script I used to rename my music files based on their ID3 tag info.

#!/bin/bash
ls | while read s
do
	i=`exiftool "$s" | sed -e 's@[/?]@_@g'`
	a=`echo "$i" | grep '^Artist [ ]*:' | sed -e 's/^[^:]*:[ ]*//'`
	t=`echo "$i" | grep '^Title [ ]*:' | sed -e 's/^[^:]*:[ ]*//'`
	n=`echo "$i" | grep '^Track [ ]*:' | sed -e 's/^[^:]*:[ ]*//' -e 's/_.*$//'`
	if [ "$n" == "" ]
	then
		n="0"
	fi
	f=`echo "$i" | grep '^File Type [ ]*:' | sed -e 's/^[^:]*:[ ]*//' -e 's/^.*_//' | tr '[A-Z]' '[a-z]'`
	z="$a - $t - $n.$f"
	if [ "$s" != "$z" ]
	then
		if [ ! -f "$z" ]
		then
			mv -fv "$s" "$z"
		fi
	fi
done