The sounds are in /data/Sound.
They are .wav files, which will be openable by Windows Sound Recorder (in Accessories>Entertainment I think.)
You need to save them in the following format:
44khz, 16 bit, mono, PCM.
Otherwise crashes may occur, especially on computers with onboard AC97 audio. Or you could download Improved U-Boat, where I did this for all sounds.
|