[Capt. Morgan]

I don't see the need to rename anything either.

If you delete the Data/Sound/Speech folder from the WoS mod *before* installing it, you retain the original English speech.

If you paste the download into the Data/Sound/Speech folder It will overwrite the German speech with English. Probably best to let JSGME do that so it (and the original mod) can be removed cleanly.

I avoid big downloads so I chose the former, however I should have a look at the files. If new German speech was added, the first method would remove them (possibly causing a crash when they're referenced), the second wouldn't, though they would remain in German,of course.