Alright, I've never used a laptop as my MAIN computer before and I should have thought about this prior to buying one, but... I have a new 17" MacBook Pro with the 200GB 7200RPM hard drive. My music collection however, is over 100GB. What would be the best way to take my music with me when I need it? My plan was to keep everything on an external at home and buy a 160GB ipod and use that to take around with me but I'm curious to know if there are any better solutions? I don't want to carry around my external with me because then I need a outlet for the power for it.