Thank you. I found the answer on one of your earlier posts.
http://wordpress.org/support/topic/plugin-podcast-channels-issue-with-invalid-xml?replies=10
“ok so you can just dedicate a category to the podcast channel you want then, keeping the home page feed normal using PodcastChannels. hurray!
if you want to try your hand at hacking Podcast channels to stop it duplicating the “xmlns:itunes…” stuff, find the line
add_action(‘rss2_ns’, ‘podcast_channels_itunes_namespace’);
and comment it out with a // at the beginning. uncomment it when you deactivate the other plugin.”
Please disregard. I figured it out.