Also, need to consider legal aspects. If the fix involves distributing modified plugins, that could infringe on the original project's licenses. So I should mention that the post is for informational purposes and that users should check the official Dolphin resources.
Another angle: Some users might have issues with other sound plugins, so QSoundHLE fixes could make a difference. Maybe the post can explain what QSoundHLE is supposed to do, compare with other plugins like DSound/WASAPI, and why fixing it is beneficial.
Finally, structure the post with a clear title, introduction, steps, important notes on safety, and where to get help if needed.
Also, maybe the fix was part of a larger update. For instance, the latest Dolphin releases often include compatibility patches. If the QSoundHLE fix is in the latest dev build, urging users to update could be better than providing a separate zip.