About HD space, its kinda amazing just how much crap can build up on them. I posted earlier i had 17 free gigs. After 5 minutes deleting crap i didnt need, ive got 25. I love things like that
I just calculated that, by an iPod's measurement (4MB per 4-min song) one Terabyte would hold 250,000 songs. Thats also 173.6 days worth of music (close to half a year).
So both realistically, and logistically, its impossible.