Dan, I applaud your efforts, but I'm not sure your logic is correct.  I
remember that part of Jobs' speech too, and I think when he was talking
about market share as a whole as opposed to "market share of the units
sold that year."  (Although, you may have a point given that he said
Zune had a 2% market share -- that seems pretty high for a product that
was just released.)

If he meant total market share, then you can't just apply the 62%
number to the annual market for mp3 players because he would be saying
that 62% of the mp3 players "owned" in the world were iPods, as opposed
to 62% of the mp3 players "sold this year."

I'll have to look at the keynote again to see exactly how he phrased
the 62% and 2%.