Old Hard Drive + MP3 player = Music
This equation just doesn't make sense. If you're an iPod addict, the HD element is redundant! Well, take a second look at what constitutes a speaker and what a hard drive is made of. They are more alike than you'd think.
Rip apart a junked hard drive. solder extension wires to the two tiny wires on the drive head. Second, connect a wire to the underside spindle motor terminal. Route them parallel for maximum clarity.
The MP3 player provides the tunes in the form of an electrical signal. Like a traditional speaker, the hard drive vibrates resonating the tune of your fancy. The point of this hack is not to replace your Bose system, so keep the 'this sux' comments to a min.
If you're in need of a slower (meaning no video) version, we highly recommend this version from our buddies at Instructables.
This hack has seen its share of celebration, but it origins can be traced to the AfroTech article here.