"Dolphin has stopped working"

[Titouf]

All right, so I was playing to get the error message, decided to switch to OpenGL for once which I hadn't tried on my new rig, and surprise, Dolphin still crashed after exactly 16 minutes, but gave me a different "Problem Event Name" than the one I usually get. Usually I get "APPCRASH" and that's the one I was expecting but this time I got this :

Problem Event Name: BEX64
Application Name: Dolphin.exe
Application Version: 0.0.0.0
Application Timestamp: 5299030d
Fault Module Name: XAudio2_7.dll_unloaded
Fault Module Version: 9.29.1962.0
Fault Module Timestamp: 4c0643cc
Exception Offset: 0000000000032891
Exception Code: c0000005
Exception Data: 0000000000000008
OS Version: 6.3.9600.2.0.0.256.48
Locale ID: 2060
Additional Information 1: b4ee
Additional Information 2: b4ee5de6a2322745523997a782b35692
Additional Information 3: d124
Additional Information 4: d124d7055b2d85f2875672479625aee3


(I was using Dolphin 4.0.2 x64 and playing Smash Bros Brawl at 60 FPS, all settings on the minimum when it happened, I'm joining a screenshot of the crash)