WordPress automatically creates a "master archive" of all of your posts and usually by default, that's what's displayed on your site's homepage when the site is loaded. If you'd like to have separate archives for your blog posts and podcasts, you could use categories to achieve this. For example, you could create a category called "Blog" for all of your blog posts, and then a category called "Podcasts" for all of your podcast episodes. Then, you can link to the two category archives in a header or sidebar menu and create an "about" or "welcome" page and set that as your homepage in the WordPress dashboard by going to Settings >> Reading.
This way, when visitors come to your site, they'll have the option of clicking either the blog or podcast links and seeing only those posts and you won't have to change your current podcast feed.