The Zen Stone Plus may not have the best battery life, but its supersmall size, built-in FM tuner, and variety of totable accessories make it a perfect companion for the gym. There's even an optional wristband that lets you wear the player like a watch, and--indeed--there's a digital watch screensaver that you can set on the LCD. The Stone Plus even has a stopwatch for timing those intervals on the treadmill. And for frequent fliers, there's the TravelSound Zen Stone, an ultracompact speaker for you to take on the road. To see the Zen Stone Plus and all of its accessories up close and personal, check out our slide show.