Thanks to the Energizer 2500 mAh rechargeable AA batteries I'm using, my GP2X MK2 w/ FW 2.0 functions as an MP3 player for many hours without a recharge. I'd like to stop using my Creative MuVo and use the (albeit much larger) GP2X as my main portable MP3 player. However, I would like to place the GP2X in my pants pocket while the GP2X is turned on and playing music. For example, the GP2X fits in the front hip pocket of my shorts, which I wear during workout at the gym. I'm concerned that keeping it in my pocket during use could cause overheating from lack of ventilation. Is this a plausible concern, or is it safe to use this way? This may seem goofy, but I'm serious Thanks!