This is so called audio post format. Could be used for Podcasting or whatever is necessary.

Castro, Fidel: We Have The Power

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A link to another site. Themes may wish to use the first <a href=”"> tag in the post content as the external link for that post. An alternative approach could be if the post consists only of a URL, then that will be the URL and the title (post_title) will be the name attached to the anchor for it.