FeedBurner announced yesterday that they are now supporting the newly created "One-click Subscription" spec for podcasts.
If you aren't familiar with this spec, the Podcast Subscription Working Group (PSWG - wiki is here) spent quite a bit of time going over different options. Several rounds of voting were held on the ipodder-dev email list. The "winning" spec is what FeedBurner is now supporting.
Personally, I'm glad that *any* decision was made. Removing the difficult aspects of listening to podcasts is an important step. The PSWG is not an IETF group, so there are of course some grumblings about it all. It is too early to tell if the spec will be widely adopted, but FeedBurner quickly adding support is a good first step.