With Huge you have complete control over who gets to subscribe to your podcast feeds, from your Access settings.
Turn off the public podcast feed
With this setting you can disable the public RSS feed. This is a good option if you plan to never post public audio posts, or if you want to restrict audio listening to happen only your hosted site.
Turn off member podcast feeds
With this setting you can turn off member RSS feeds. This restricts listening to member-only audio posts so that it can only happen on your hosted site.
Members will not be provided a member podcast feed URL when they sign in to your hosted site.