Exercising while listening to music is classic, and something that most runners do. So what do you do if your daily workout takes you out of the gym and into the pool? Now you can listen to your favorite tunes while swimming your lengths thanks to the Sony W Series Walkman ($80,00). As the inventor of the original Walkman, Sony knows a thing or two about portable music devices, and it has delivered a fine product with the W Series, which is modestly priced at $99. The MP3 player can be submerged to depths of 2 meters, and it will offer 4GB of storage and be good for around 8 hours of playback.