Mea culpa
Oops! I stated the capacity of a MiniDisc above as being 700MB, when of course it was closer to 100MB. The playtime of 74 or 80 minutes was equivalent to a 700MB CD, but of course MiniDisc used ATRAC compression.
This means that the iPod held the equivalent of 50 Minidiscs. More than a sockful, that's a veritable shoebox.