I toyed with the above script and it works great for mouseovers and mouseouts.
The next question is how to generate a sound when a link is clicked. Here are some things I've tried so far:
Works fine in MSIE, but... - Nesting error may trip up some browsers or spiders. - You can't put a quote inside a quote inside a quote, so none of the functions in HREF can have arguments. - No sound comes out with NN4.7 (possibly the original Codebrain script, possibly because I'm running it locally) - Fails miserably in Opera. GetRight butts in, and the link is no longer clickable...
I'm still working on it, but if anyone has any good ideas, I'm all ears!