I should clarify - I don't mean that IE7 is going to sell music, but I do mean that Rick Klau of Feedburner thinks that the podcasting space is going to explode once again once IE7 comes out with its built-in reader and podcatching abilities. That should be at least as big a boon to podcasting as the introduction of podcasts and podcatching into iTunes 4.9.
Rick points out that there are 50-60 million iPods out there, but hundreds of millions of computers. The argument goes something like "IE7 will put feeds and podcasts in front of a that vast majority of computer users who don't use portable players and have never seen a feed before in their life". I'm pissed at Rick for bringing iPods into the discussion and therefore helping to perpetuate the myth that iPods and podcasts are somehow connected, but I'll get over it.
Some more interesting info:
FeedBurner manages 70,000 podcast feeds and has 5 million subscribers to those feeds. As Frank Barnako points out, that's
FB is seeing a 20-30% growth each month
There's no way to see anything other than a show was downloaded. FB doesn't know whether shows are being listened to on computer or devices and really, no one else does either.
This information came from an interview with Rick Klau and the San Francisco Chronicle from the PME floor.