Youtube video sharing to play audio in Symfonium

Feature description:

I would like to be able to play a YouTube video’s audio track in Symfonium and cast it.

Problem solved:

Can’t play a YouTube video’s audio track in Symfonium currently.

Brought benefits:

Being able to read YouTube video’s audio track and cast it on amp that doesn’t support YouTube. Access the YouTube catalog easily.

Other application solutions:

 
In other similar apps it’s usually achieved via the YouTube share feature (and I think an http stream).
 

Additional description and context:

 

 

Screenshots / Mockup:

 

   

This is against Youtube TOS and with a very high risk of full account ban.