Is there a way to savagely cripple flash ads that make noise at you?

You’ve likely encountered them yourself, browsing around. You’re minding your own business, listening to your music, and suddenly your head is invaded by a well-chosen voice telling you about the dish detergent that you don’t want to buy. The advertisers weren’t kind enough to include a mute button.
You could silence your speakers, but what about your music? Is there no way to enjoy your browsing in peace?
Is there no add-on that can fix this without crippling all of your Flash?