Affiliate Marketing Secrets

I’ve Done Lots of Looking And Research On The MTP System I Was Just Wondering If I Cloud Open My Zune And Put A 320GB 1.8″ Hard Dive In? Would It Work Or Is The Zune Firmware And System Stored On The Drive
(Drive: http://www.ecost.com/detail.aspx?edp=579…
(MTP:http://en.wikipedia.org/wiki/Media_Trans…

So for christmas I am torn between a Zune or Ipod. I really like Ipods however I am not willing to pay a dollar per song! First question is can I use a program like limewire to get songs onto my Ipod or not? Also are there any additonal charges w/ an Ipod touch? For example internet etc? On the Zune I want to know if I can only get songs through Zune’s store also (charges affiliated too).