thanks guys for the comments :)
I think the pop-up should work on most computers since it opens with user's input.
But for the music part, it seems that Windows has some kinda default security setting problem with my code. I hope it's ok to talk about that here since it's not directly related to WP... But I'm very interested to know if others are having problems with audio as well.
As far as the "incredibly unnecessary" index page, it's true that it obviously doesn't ad any useful functionality to the site. It does however ad (what I believe to be) some interesting graphic elements that are not to be found anywhere else on the site and and ties together the name of the guy's site, his picture, one of his drawings, and his job title. And it's easy to bookmark the news page if you don't want to see that index.php ever again...
Thanks again guys for your feedback!