I've been testing the model out on a variety of audio and I've found two rare cases where the call to scipy.signal.resample in the pre-processing step appears to never return. Perhaps it eventually would, but one of the songs was just a little over a minute long and I let the process run for at least 15 minutes with no apparent progress...
The most viable path forward, as far as I'm concerned, is probably to execute the preprocessing script in contemporary Python 3 to see if the issue repeats, but I just wanted to write in and note on the issue, and ask if anyone else has seen anything like it?