The TrailAudio 512MB MP3 player with FM radio. $170.00. One day you may get an irresistible urge to clamber up a mountain whilst listening to Milli Vanilli. Leaving aside all psychiatric issues inherent in that sentence, you may want to carry along one of these puppies. Why? Because it’s got a built in detachable carabiner clip, that’s why. Now stop asking questions and go buy suitable boots.