Oh, you'll be fine. Just remember to ignore what anybody says about you and simply have a good time... chances are they'll just be involved in doing their own things to bother picking on you. The only school dance I went to was senior prom, which was pretty cool, and everybody just had a good time.
I've been playing drums for 3 years. I got my kit 3 years ago this month, but I started in that August. And I have fun with them.
Change the ".mp3" to ".html" and you'll get a page from which you can link to the file, if it gives you trouble... I forgot that provider doesn't like hotlinking since I haven't used it in so long (due to the embedded ads and popups).