what's everyones case for their favourite mp3 player? I still need to get one. I want a durabil light case that i dont need to take my ipod out of it everytime i need to change a song or w/e. so far i only think the iskin achieves what i want. Does any1 have an iskin for ipod touch? what are their opinions on it? www.iskin.com check it out there. also on the case i see a sQUARE thing on the top left, what is that for?