A thought about MP3 players as it relates to hiking. I personally know of three people who have had close encounters with rattlers on the trail while using them. Two almost stepped on one and one person actually stepped on one while jamming to tunes, luckily didn't get bit as rattlers aren't quick to bite people. I used to carry one all the time...but after hearing this I have decided that if I do take mine it will be strictly for camp. I carrry a small samsung with an FM tuner and alarm. Regardless...be careful if you're gonna hike while bopping down the trail.