Just wrote a quick script to rename a bunch of mp3 files, removing the site name from the file. (ie from “23 Glory [www.site.com].mp3” to “23 Glory.mp3“. This uses the ${var%remove-from-end} bash variable manipulation.
for file in *.mp3
do
mv "$file" "${file%\[www.site.com\].mp3}.mp3"
done
See the Advanced Variable Manipulation in Mendel Cooper’s very useful Bash Scripting Guide.
Squirreling 