It's great to see you back again.
The standard intro is all that is needed. Thanks for checking.
"Section [number] of Stories From The Operas, by Gladys Davidson. This is a LibriVox recording. All LibriVox recordings are in the public domain. For more information, or to volunteer, please visit: librivox DOT org"
If you wish, say: "Recording by [your name], [city, your blog, podcast, web address]"
Say:
"[Section title]"