Audio Won't Play in 3.2 Windows DirectX projects

I recently converted my XNA game to MonoGame. Everything went smoothly except for audio playback.

I’ve tried playing SoundEffects, SoundEffectInstances and XACT cues. They all produce nothing but silence for me in a MonoGame for Windows Desktop (DirectX) project.

Has anyone else had this issue? Is there any known workaround?

I tried running the same classes in a MonoGame for Windows Desktop (OpenGL) project and all the sounds played as expected.

Edit: Is XAudio working properly for other people? Any info would be greatly appreciated.