I was thinkin about getting a new HD for my MB cause it's running out of space again and again (120GB's). About 30 of it is music, then i have about 50 on my external, but I use my 40GB iPod to play my older collection (had to take out some fluff to fit the 40GB's). So roughly I have about a lil less than 80. I like having the collection together in it's entirety so I thought, why not get a new iPod and carry it all there and dock it when I wanna listen to music. So is that a good idea? Anyone do this? Have no music at all on my computer, (i'll have it backed up on my external in case something happens to my pod). Would I run into any problems? I'm trying to figure out if this would be a good alternative to buying a new HDD. Any cons? I would also like to know if there is a way to sync the iTunes libraries so they preserve the play counts and stuff like that.