Hey man, I was the exact same way in high school. What was cool was I was in a bunch of different activities and also an honor student so I found lots of different friends with different tastes. Finally I ended up hanging out with a group of people who had one thing in common - none of us fit in anywhere else! You are not alone!

PS You should see my itunes mixture... Its so much easier for me to answer "what music DON'T you like", than "what music DO you like"!