Imported wav file not playing

I’m trying to play a wav file I imported using the Play Sound 2D node, but the sound never plays. I can’t even play it in the content browser. The thumbnail for the imported sound wave is blank, but the duration and other details remain intact. Sounds imported from the marketplace work, but not sounds imported from my computer. Importing the sound through the menu and dragging it directly into the folder both produce the same problem. How do I fix this?