I wonder if Steve will be "smoothing the waters" for possible price increases. I suspect that Apple had a one to two year contract with the major music labels and with all of the recent talk about music download price increases I can only assume that the days of 99 cent downloads will probably end within the next year. Unfortunately, I think price increases are probably inevitable. I'd say that they will likely end up at something like $1.50 to $2.00 per song with a discount for an entire album. One certain way to kill this entire industry is for the music labels to price downloads at over $2 per song. I suspect that some in the music industry are already thinking that they'll be able to do that and in fact some reports suggest prices as high as $2.50.
As for the total Music Store download number, I'd guess 79 million.