TuneBug (http://www.tunebug.com) has released the Tunebug Shake, an US$99.99 device designed to turn any helmet — be it ski, snowboard, skateboard, cycling, or hard hat — into a “personal music concert.” w

The Tunebug Shake sends sound waves through the surface of the helmet creating an overhead listening experience. It’s designed to eliminates the need for earphones. It can be connected to iPods, MP3 players, mobile phones, or any other portable music device wirelessly using Bluetooth technology or by audio cable.

The Shake also features a rechargeable battery with about five hours of playtime. It charges via the included USB cable.