if you import the ffmpeg library on audacity, you can pretty much export whatever audio as an .opus file, then you just swap out the audio you want with a file of the same name in the streaming assets folder
under the streaming assets folder in clone hero data, you can replace the opus files you'll need audacity with the ffmpeg library downloaded in order to export audio as an opus file, which you'll find under edit -> preferences -> libraries then you just put in whatever audio you want, generally you'll also wanna amplify it with allow clipping or whatever so it's not hella quiet in game menu sounds are taken from here ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-zyUpa0xwOSw.html starmen.net/mother2/soundfx/click.wav link to some of my old streaming assets is here cdn.discordapp.com/attachments/504486168226824193/995103603217924167/StreamingAssets.zip
