Need help making a simple Konqueror file browser script

[tj.milligan]

What I'd like to do in Kubuntu is be able to right-click a wav file and have a custom "Convert to mp3" menu option.

I can do this w/ a bash script, convert.sh:

#!/bin/sh
ffmpeg -b 128k -i $1 $2.mp3
rm -R $1

Then making it executable and running it:

./convert.sh in.wav out

However, I'm making this for a friend (who uses krecord to "tape" class lectures); and I don't want him to have to use the terminal if it's possible to make it so he can simply right click on the wav files he'd like to convert. Thanks in advance!