Check out this gadget called iHat which is compatible with anything that has a headphone jack, but I'm not sure how good the sound is. It is actually a skullcap with a couple of speakers embedded in just the right places. Simply plug the iHat, which has an in-built speaker, in your iPod or MP3 player and bop along as you do your thing! With iHat you can listen to music, keep warm and be cool all at the same time. It will be available on December 14 with a price of $25.