It wasn't playing in either hotel last May either. Boardwalk's BGM used to play outside on the Boardwalk itself but has been limited to the inside of the hotel for some years. I believe Yacht and Beach Club's has been turned down well. Soarin's line music was turned way down on our last visit. That's a great loop-- you get to hear the soundtracks from great American film epics like Air Force One, Far and Away, Apollo 13, Consenting Adults, and Indecent Proposal (not kidding about the last two).
Interestingly the real estate of the Frontierland loop that you hear walking around the River expanded to Big Thunder a number of years ago. Since then it has expanded deeper into the entrance of Splash Mountain's queue as of last January.
Lost but not forgotten is the empty Skyway building in Fantasyland that woud blare out yodeling for hours on end before it got razed.