Perhaps you could try posting some part of the url (like the part without the http or www, or type it with spaces that our posters can copy in to the browser line and eliminate the spaces - to help us identify the video quickly).
Terciel - do you know who the artists are? The versions I found of those tracks were from the "Ballroom Swing" album, but neither of the samples sounded like what was in the competition. Thank you for your help, though!
Spirtrian - on closer inspection, it appears that the names I gave those songs are not, in fact correct. Apologies for the inconvenience. If I could figure out how to delete my previous comment, I would.
I really do want that waltz though, so I will put a bit of effort into trying to find it.