Shielding An HD From Excessive Vibrations?

schematic asks: "I'm planning on building an mp3 player for my car, but a few of my buddies brought up a good point yesterday. They asked how I'd planned to mount the hard drive to protect it from vibrations (bass) and bumps (crazy driving). I've heard of a few good ideas, but I dont know what I can do to shield it from the bass, since that seems to shake the daylights outta everything. Anyone have a similar setup or an idea that works?"