Two thoughts:
1) The ogg file is encoded differently. Does it work if you use the ogg file from game in game2?
2) The filename isn't quite right. I was suspicious of the spaces in the original name you showed, but you said it worked, so I'll accept that.

But make sure that the case is the same in both your source and the file name (e.g "Audio.ogg" vs "audio.ogg"), as Windows is forgiving of file name case differences, but other things might not be. Also, try using a very simple name (e.g. "a.ogg") just to rule that out as a possibility.
You could rename the .quest file to a .zip and open it and see that the .ogg file is actually in there. And also beware of trying to put things in subfolders. I never had any luck with that.