[nutjob123]

Not sure how well this will work when someone wraps their old hard drive based iPod (or brand new iPod classic) and wipes some bits on the drive...

[DugFin]

The hard drive itself contains comparatively huge neodymium permanent magnets. Those tiny magnets on the headphones will not affect the hard drive.

[jrockway]

It's fine to put magnets like this on hard drives. They are not strong enough to do any damage, especially given the space between the platters and the magnet that the case of the drive and iPod ensure. (Credit cards with high-coercivity magstripes are similarly immune.)

[fluxxy]

That is a good point. We do not recommend using these with those models as the magnets would cause problems.

[jessriedel]

Other commenters here seem to think that they wouldn't be a problem. I would find out definitively and say one way or the other on your product page. Geeks will worry about it.

[fluxxy]

The only models in question would be the hard drive based models. There will be no problems with the iPhone, iPad, iPod nano or shuffle. The iPad case uses these same magnets.