Okay, I finally added a podcast, using the Google link (on Library2.0 Week 9 Thing 21) to link to my Google reader account. And it worked the first time. (I'd forgotten how to post a feed to the blog but Google's "help" got me back on track. Another plus for Google.) You can find the link widget to the "spanish lesson" I added to my blog on the right side with the list of other RSS feeds - underneath the loooong list of postings.
I am soooo glad to move on, to ebooks and audio books.