Well, it goes like this:
I use Export Audio Mixdown and create a file named Mix_01.wav. 24 Bits.
Then I change my mind and use Audio Mixdown again, this time changing 24 bits to 16 (either after using a dither plugin or just truncating, the result is the same). I hit ‘Export’, after which Nuendo asks: Overwrite? I say yes and the new file is written over the old one.
The new file thus has the same name as the original and is indeed 16 bits. The size, however is 1.5 x what it should be. And since there is only 1 file, there is no chance of playing back the wrong file.
Like I said earlier, if I give the file a new name (Mix_02.wav) before exporting it as 16 bits, the file size is correct. I just want to be able to overwrite a file that has the wrong format.
It is only recently that I noticed that the file size is incorrect. I installed Mountain Lion the other day, so that could be part of the problem. Now I think about it, I should try using a different application and do the same thing. Maybe I will. I’ll report back…