hello, im new here and was actually referred here from someone else on the cobaltss.net forums but anyways, i will be getting this unit in a couple months and was wondering, whats the biggest size (gb wise) the unit will recognize? and also, could i put music onto the sd card and play it through the unit? and one more thing, this site is AWESOME.. i had no idea people were hacking navi's.. thats great. ive been hacking my cell phones and im decent on the pc so this stuff shouldnt be too much worse, for me to mess up anyways lol.. thanks again!