As I checked the WOFF installation for music I got an error message on some music files and wonder what is up with them.
Foobar reported them as Decoding failure at 0:00.000 (Unsupported format or corrupted file).

The files are:
Front.wav
Front.wav
Front1.wav
Front1.wav
Front2.wav
Front2.wav
Front3.wav
Front3.wav
Front4.wav
Front4.wav
Frontamb1.wav
Frontamb1.wav
Frontamb2.wav
Frontamb2.wav

I checked them out and they are only 44 byte large, I doubt the are all damaged the same way so are those dummy files or what is up with them?

the only files I have are:

Front.wav = 1.19 MB
Front1.wav = 1.8 MB
Front2.wav = 3.02 MB
Front3.wav = 6.23 MB
Front4.wav = 5.77 MB
Frontamb1.wav = 0.621 MB
Frontamb2.wav = 1.96 MB

BigDuke66

I suspect your music files are corruption.
Have you tried a fresh install?

I should have doubled checked, not sure why foobar added these brackets & numbers but I corrected my initial post, anyhow the files in question are:
Front.wav
Front.wav
Front1.wav
Front1.wav
Front2.wav
Front2.wav
Front3.wav
Front3.wav
Front4.wav
Front4.wav
Frontamb1.wav
Frontamb1.wav
Frontamb2.wav
Frontamb2.wav

One set of files is in the "OBDWW1 Over Flanders Fields\sounds" folder, the other is in the "WOFFScenery\Sounds\Front\Quiet" folder.
Makes me suspect that it's maybe the way it should be, at least for the later folder as it was surely not named quiet for nothing.
But the other file set...

Interesting is that files with similar names are in other folders and they play just fine, they can be found in:
\WOFFScenery\Sounds\Day\
\WOFFScenery\Sounds\Front\Bombard\
\WOFFScenery\Sounds\Night\

They are indeed quiet for a reason, if there is no front activity then quiet ones are used. They are not for foobar soi don't use them there. WOFF swaps in 1000s of files for many reasons.
You have basically found no issue by looking in folders .

Thanks for the clarification.