.Wav Files playing in some experiments and not others

I am using .wav files in audio stimulus lists for an experiment, which I have used in previous experiments on the same version of superlab. However, in my current experiment, they are not playing. Is there anything I can do to get them to play? They play on my computer and past experiments just fine.

I would suspect one of the audio settings in the experiment. Can you post the experiment as a package (go to File menu → Create Experiment Package)?

Here is the experiment package

bphil 2:13.zip (2.55 MB)