Game crashes on startup

I encountered a weird bug after fighting the Abyssal Cult and reaching Sonata City. I tried opening the game, only to have it crash and display the following error:


After a bit of digging, it turns out 381Cry and 382Cry are both corrupted, but I can’t redownload just the audio files from the 1.2.7 merge patch (doesn’t show up for whatever reason). Do I have to redownload the entire game? Is there a way to do that without losing my save file?