History: So I put the entertaining Fall City Rat Hunter saga on the web back in 2003 for friends and family ... and then people would send me their rat hunting stories, which I started uploading also. I decided in 2006 that I wanted to futz around with some CSS/Ajax technologies, so I jazzed up the site a bit. I also added audio; it's done with WAV files and works fine for me in Firefox and Internet Explorer ... but a few folks have said it doesn't so I assume that some sort of audio plug-in issue. So what exactly IS the best universal format for sound stuff?!?