If those ads showing swimmers rocking Sonys new Walkman havent convinced you its really waterproof, then get this: you can buy one packaged inside a full bottle of water. The Bottled Walkman is currently being sold from vending machines across New Zealand in places like gyms, right beside neon-blue bottles of Gatorade. The idea behind the promotion is to get the device out of electronics stores and into the places target customers actually hang out.