I HIGHLY recommend dumping the game if you don't have the game in loadiine format to view the audio files. This guide will already assume you know what files to change and where they are located.
What You Need:
- The file you will replace
- The file you will replace it with (in MP3 or WAV format)
- PES Sound File Converter
- Audacity (or any audio editing program)
The sound files that you will replace the originals need to be of the same length or shorter than the original files, if not you will get very loud audio corruptions. To do so, first open PES, locate the file you want to replace and convert it to a usable format. Open both the original audio and the replacement in audacity, then trim your file to match the length of the original.
When replacing sounds it is important to remember that the game does not control audio volume, instead the volume is determined by the volume of the sound file. If you dont lower the volume of your replacement it will be very loud when playing (you thought the music in cutscenes was bad).
To lower volume in audacity go to 'Effect - Amplify, then set the amplification to a negative value, play with this to make the waveform match the original file.
Export your audio as a .WAV then open PES. Set PES to convert from WAV to ADX, then drag in your exported wav and convert it. Once the conversion is done try playing it in VLC to see if there are any issues. If everything worked you should now have an ADX file that you will use to replace the original file.
Rename the converted .wav to the SAME NAME as the source ADX file.
Step Three (Wii U):
Open your Xenoblade X SDCafiine folder (follow THIS guide) and locate the folder that you pulled the source file from, if it doesn't exist create it. Simply place the new ADX file into the same location that the source file was from.
Open the game with SDCafiine and go to where the sound is played, if you hear the replacement sound you have done everything correctly! If not then check over the steps again, if it still doesn't work post a comment explaining the issue.
Step Three (Cemu):
For cemu just simply replace the original file with the new one (MAKE A BACKUP), and launch the game and go to where the sound plays, if you hear the replacement sound then you did everything correctly! If not then check over the steps again, if it still doesn't work post a comment explaining the issue.