Can't locate certain sound file

[Bergwerkzwerg]

I have a specific question regarding the location of a certain sound file, which can be played back ingame via the grammophone. It's a relatively short clip from a radio broadcast (as i assume since it's not from the Wochenschau) which deals with the bombardment of the Westerplatte from the pre-dreadnought Schleswig-Holstein.

The problem is: i can't find the file in my SH3 folder structure.

I play with the NYGM Mod and some other smaller ones. The only sound mods i use are the KSH_Das_Boot_Soundmod_V3.0, KB's Diesel Sound Mod and Grossdeutscher Rundfunk. In the folder data/sound, i have the folders Gramophone, Menu, Music, Radio, Speech, Speech_En and all the other sounds from the game.
In the Gramophone folder there is only the sound file from the vanilla game, nothing else. And in the Grossdeutscher Rundfunk folder regarding 1939, i heard through all sound files but there isn't the one i search for.

If you can help me to locate this sound file i would be very happy. Is there a .txt, which controls which sound files is played back in the grammophone? Maybe i can go back from there...