Just to update this thread (I'm updating myself since I've been away from this forum for a long, long time), this is a reminder to me of why I too wish *something* else from IYHW would surface. The reason why we're only stuck with the Dixieland track is because of the unfortunate anti-WDW history prejudice that seemed to exist in the guys who were responsible for coming up with the cues to make available in the WDW and Disneyland Forever systems a decade back, in which this was the only crumb from a unique WDW attraction they were willing to throw us even though it's far from the best cue in IYHW (the main chorus from the beginning, the same voices doing "You Do Have Wings" as you exited; the Concourse waiting area themes.) Ultimately this attraction deserved a giant mega-mix of all cues from the outset and we sadly got the shaft on this.
Seeing the rest of the cues from IYHW along with the total underscore for the old Hall Of Presidents attraction (and maybe to a lesser extent the WDW version of "Nowhere In Particular" that played at WDW's Toad Ride up to 1996 before the DL version replaced it the last two years) remains my last two Holy Grail items in Disney theme park music. I'm grateful for the fact that so much has surfaced in the last decade, thanks in part to the people associated with this and other great Disney forums but there is that perpetual frustration over feeling like you've assembled a giant jigsaw puzzle and your last missing pieces are not from the edges but the center of the puzzle!