Architecture / Installation

Hi, trying to figure out how to get an extra line break in between shouts in the shoutbox so they are spaced a little more and easier to read. I don't want to mess with the line height in css, just add an extra line break so it will be uniform across all themes

have had a look in:
tiki-shoutbox.php and
modules/mod-shoutbox.php

but couldnt see how it might be done, or if i am looking in the completely wrong place

thanks
jacci