@infinitesymphony,
@tuga,
@Shazb0t,
@dasdoing,
@detlev24, I'm so sorry, and so embarrassed. But after attempting to convolve more files, I went through the checks again to make sure that an impulse response was being convolved correctly, and it wasn't.
Since I don't know if it stopped working before or after I convolved the last lot of files, I no longer have faith that they were correctly convolved with the phase-distorted impulse (it's not possible to check the files directly, as any phase changes are visually lost in the complex waveform).




I'm working on it now and hope to have a solution soon. But you may not even have been listening to different files, I'm afraid :/