Before adding the link to my Blogger template, I opened an account at Talkr.com and followed their instructions for setting up a podcast for my blog. They generated an RSS feed at this URL http://www.talkr.com/app/cast_pods.app?feed_id=38845. Note the unique feed ID of 38845.
Once I had the feed ID, I had to write a line of HTML and insert it into the Blooger template.
The instructions on the Talkr web site turned out to be for an older version of Blogger, but I found current instructions on the Talkr help forum. I followed those instructions and ended up with this line of HTML:
The footer section of the Blogger template begins with the line: