I'am having the same problem. In launchBox sometimes after returning from a game I hear the audio from the video of that game. Sometimes even after editing a game I hear the audio from the video of the previous game I edited. Funny thing is, I don't even use de "Game Details view" in LaunchBox and I don't have game audio files. Disabling "Show video's" for LaunchBox's Game Details view solved the spontaneous audio issue for me.