I pod heatsink? anyone done it?

[tarnation]

ok, so, I finally got the video to work on my ipod mini 2g, but, I noticed when it plays video, the hard disk spins constantly, and I also noticed my ipod gets fairly warm. I am slightly worried about this, and I have not gotten up the confadince to watch an entire family guy episode at one time for I am afraid of it overheating. has anyone built a simple heatsink type object for the ipod mini? or of a case/protector that is currently out now that will reduce heat. or, is this even a problem at all? am I just worrying about nothing? or is it OK for me to watch a full langth movie at a time?

thanks so much guys.