Yeah I noticed this new loop too. Haven't had a chance to go alone so that I can sit and make notes of it's contents (why is it that the rest of your party never wants to sit in one place at Disneyland and just write notes about music?). It does sound like it's all from other sources, but nice nonetheless.
In my post, I was referring to the loop that plays in the lobby. Yes there is also an "overture" that plays as you enter the actual theater, and something that plays as you exit (though for all I know they are the same). Neither of these are quite as impressive (at least not on a cursory listen) as the "One Man's Dream" Overture, but there are some familiar tunes.
Just off the top of my head I seem to remember Miracles from Molecules and something from Carousel of Progress being played. Don't remember specifics, but I didn't hear anything that hasn't been available elsewhere.
I can't give any information about the loop, because I haven't made it out there yet, but I know that John Debney scored the film with Steve Martin. Does the load/exit music derive from the film score at all (as it does in One Man's Dream) or is it entirely made up of classic Disney tunes?
Got to hear a bit more of the loop in the exhibit area the other day. I was surprised by how many "non park" tunes they used. Be Our Guest, and I wanna say Under the Sea, as well as several other animated film songs. All instrumental, and nothing that you could say had absolutely no place in the park, but geez, you'd think at the least they would play stuff from the 50th set, and drum up interest. I don't remember thinking that any of the animated film songs I heard were commercially available.