I already said what you pointed out I missed.
to put it another way, The blog should act as the page with the show's links just like the newsletter, the newsletter should also contain the MP3 streaming flash player, and instead of having 2 newsfeeds, one for the MP3 podcast itself and the other for the blog, they could be consolidated into one feed.
The vast majority of podcatching clients would scrape the feed and just download the podcast, so doing this should not cause anyone with an upto date fully fledged podcatcher any problems.
This way a person could subscribe to the newsletter OR visit the blog OR Subscribe to the blog/podcast feed.
This makes more sense than now where I have to visit the blog AND receive the newsletter (or visit the show notes) AND subscribe to the podcast.
Sure the blog is a launching pad to all sorts of info and content, but most of it is only used occasionally where the show notes are used every episode. It would only make sense that this would be added to the blog.
Many people don't like newsletters or HTML email. Some people don't use newsfeeds. Some people prefer to go to a central place like the blog manually.
You could still do all three but there is no reason that people should have to use all three to get the full experience.