This looks interesting. You can create a personal surround sound with this action-sports-friendly speaker:

“Mobile music typically means listening through headphones, dangerously isolating yourself from others and your environment. The Tunebug Shake is an ultra-portable sound generator that can be connected to iPods, MP3 players or mobile phones or used wirelessly using Bluetooth®. When mounted on a bike, skate or snowboard helmet, the Shake creates a surround sound experience.”

The Shake also works when not in action or wirelessly connected, performing as a standard speaker by hooking up to iPods and mobile phones.

More about it at http://www.tunebug-europe.de/shop/ although that might only help if you can speak German. Or check out http://store.tunebug.com where you can some videos of it in action.

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