copied this from my inbox but it should work!

1. Go to your playlist on YouTube and copy the Playlist ID (don't use the Liked videos playlist)
   1. It is this highlighted bit from this: https://www.youtube.com/playlist?list=PLbIz82r1FMqas6MM5wVyPOpuukN73tPqi
   2. I don't know if the playlist can be Private so it's best set to Unlisted/Public instead!
2. Paste the Playlist ID after the https://www.youtube.com/embed/
   1. you should be getting something like this!
   2. https://www.youtube.com/embed/playlist?list=PLbIz82r1FMqas6MM5wVyPOpuukN73tPqi

and it should work now!  you may need to write a disclaimer that users can use the following (as it is a playlist):

• SHIFT + N: Next Song
• SHIFT + P: Previous Song
• SPACE or K: Pause the Song
  
  

hope that helps!