A sport mp3 player is something you'll need  if you're the sporting type. If you don't imagine yourself carrying an apple Ipod while jogging, you're right: there are other mp3 players better suited for that task. A sport mp3 player is just the thing you're looking for.

 

If you're going to run around, you better get a mp3 player with no moving parts that could be damaged by the constant movement and bumping around. That is no problem, as most mp3 players have flash memory for music storage (and you won't need 20Gb or larger, Hard disk models - a 512Mb flash mp3 player will be able to provide enough hours of music for your sporting activities). Then you just have to select something small and light which won't be a problem, as mp3 players can be found in ever smaller forms. Those are the main things to care for when looking for a sport mp3 player.