It's available, but not available.   I may have confused you.   

The song is listed. It has a thumbnail. You click the link, go to the page, and then it says "this video is not available - sorry about that".   But for a little while, it was fully available with audio. Then it disappeared.   Then it came back. Then it disappeared. So all I was trying to get to the bottom of is what is happening.

   I can create a link - but the song 'My Bonnie Maureen' sung by Daniel O' Donnell when it's on Youtube is here today and gone today. So I can't figure out why, as it's not anything to do with my system.

It's apparently not just that track, but some others by the same artist. I'm just equally confused and looking for a logical explanation. Thanks.