Be thankful that the applause does not sound realistic. If it did, the music wouldn't. Reason? When recording, mikes are optimized to record the instruments, and thus are usually quite directional. Even omnidirectional mikes are usually placed in front of or above the performers. To adequately capture the sound of applause, additional mikes would have to be hung or placed in the audience, which would over-emphasize room or hall ambience. Mixing would also become much more complicated, trying to find the right balance. So, if the music sounds right, enjoy it and don't think about the applause -- it's only there to inform you that the performance was done live.
Applause: Bummer
Now that I have a rig I can call a "system", I often find myself looking up from a book or the computer or whatever to pay attention to a particularly involving musical passage. Finally, it ends and I think, 'wow, that was just right', or 'jeepers, Vladimir or Dizzy or _______ was right here a moment ago'. But if it's a live recording, the applause always brings me down. Never, not once have I heard applause on any audio rig that sounded like hands clapping. Baez "From Every Stage", Dizzy "An Electrifying Evening" and "Newport II", "Jazz at the Pawnshop", Horowitz at the Met", Clapton "Unplugged", nada. Am I opening the gates to hell pursuing realistic applause? Is it out there at $50,000 per? Should I care? Have I ruined anyone's day?