You can add a podcast directly to a journal entry, which will be automatically embedded in your journal's RSS feed. 

Step 1 - Edit Entry

In the entry edit window, navigate to the 'Details & Timed Actions' tab. 

Step 2 -  Add File

Click the 'file' icon to the right of the Enclosure File field.

Step 3 - Select Enclosure

Choose the location of the file from the drop-down menu, and select your podcast. 

Step 4 - Save 

The enclosure will display at the end of your journal entry.  Site visitors can click the link to download the file from your site, and the enclosure will be automatically added to your RSS feed.