This episode is an intro to episodes around the podcast world on Charlemagne. (couldn't find any specifically about Andorra). You can find this episode at
https://www.lang4life.com/l/andorra/

Metal Album about Charlemagne with Christopher Lee - https://www.youtube.com/watch?v=0eeRBh7fiQ4

It will include some clips of each one that has clips available as well as links down below to their episodes.

The History of English Podcast - https://historyofenglishpodcast.com/category/charlemagne/ 

The Viking Age Podcast
 - http://vikingagepodcast.com/charlemagne-saxon-wars-part

The History of Byzantium
 - https://play.acast.com/s/thehistoryofbyzantium/episode-81a-charlemagne-and-leo

The Medieval World
 - https://www.themedievalworld.com/

We Talk about Dead People
 - https://soundcloud.com/wetalkaboutdeadpeople/105-charlemagne-return-of-the-king

The Life of Charlemagne e-book
 - http://www.loyalbooks.com/book/the-life-of-charlemagne-by-einhard

Charlemagne: medieval empire builder
 - https://www.stitcher.com/podcast/history-extra-podcast/e/62794311