The shuffle and nano should be waterproof. I can sweat alot at the gym. It would be nice if they could withstand heat too. My shuffle started acting up when I use it in the sauna and steam room.
Really? I thought it was a great little gym device. I don't care what the screen looks like while I'm running, but I do want to access my tunes the way I want to (ie not shuffle). And for gyms that "broadcast" television audio, you've gotta have the FM receiver. The size and the built in clip make it tops IMHO. I don't mind a single-tasker that lives in my gym bag.