use flac tags to rename files

#!/bin/bash

for a in *.flac; do
ARTIST=`metaflac "$a" --show-tag=ARTIST | sed s/.*=//g`
TITLE=`metaflac "$a" --show-tag=TITLE | sed s/.*=//g`
TRACKNUMBER=`metaflac "$a" --show-tag=TRACKNUMBER | sed s/.*=//g`
mv "$a" "`printf %02g $TRACKNUMBER` - $ARTIST - $TITLE.flac"
done

(Also see the post on converting flac to mp3s)