Solution to not being able to wear headphones while riding

Mr. Samaroo's sturdy Mongoose supports a system with four 12-inch speakers that can handle the 5,000 watts. He's co-owner of a business called Legal Intentionz that mounts steroes on bikes.

http://www.nytimes.com/slideshow/2007/11/29/nyregion/1129-BIKES_index.html