About multi-track extracts on YT

I saw this[url=http://www.youtube.com:80/watch?v=berQFFWE5Uk] http://www.youtube.com/watch?v=berQFFWE5Uk[/url], which claims to be isolated from multi-track, since there's no piano or bass. I suspect, though, that it comes from DTS. Anybody knows for sure? Same for http://www.youtube.com/watch?gl=IT&hl=it&v=8vZbzxQOsiY&fmt=18

This sounds definitely more like a fanmix created using the channels from the DTS mix, but I'm also not 100% sure