I just wanted to inform you that the plug-in (as of 1.0.9) is using deprecated functions.
I have WP_DEBUG set to true while i work on developing a plug-in for WordPress 3.0 and when I activated the Blubrry PowerPress plug-in, the following NOTICE shows up in the admin section:
Notice: has_cap was called with an argument that is deprecated since version 2.0! Usage of user levels by plugins and themes is deprecated. Use roles and capabilities instead.
When viewing the feed, the following deprecated notice shows up:
Notice: wp_specialchars is <strong>deprecated</strong> since version 2.8! Use esc_html() instead.
I hope that helps.