This is an awesome remix, and one of my favorites on the site. Mario music has always been my favorite, right up there with Zelda, Earthbound, and Zombies Ate My Neighbors.
Well, I know there are people on here with a better ear, so grab a USF plugin and take a listen to the soundtrack, easily found here.
Open up "Powerful Mario", which is the music from the flying hat. Now, I believe that this remix sounds an awful lot like that. But, both the remix and this game music sound like the star music from SMB.
So what's the verdict? DOWNLOAD THE REMIX, it's awesome! Sure, this remix might be from a bunch of Mario games, last generation and back a few as well. I say All-Stars would be the only logical place to put it, as All-Stars was a compliantion anyways.