OK, here's what I found out. When I posted the Pop Staples song before, I had been listening to Dinger's song post and I just typed in "I shall not be moved - Pop Staples" in the window from Dinger's song and it came out as a link.
However, I just went to Youtube and then cut and pasted it from the browser window and low and behold I got the Vid instead of the link. Now whether this answers the question only time will tell.
You might try it with the ones you posted that came out as a link and see what happens????????????????