Since I’d been asked by @Jeeke and some other people- here is a how-to guide on using custom soundpacks in TS Client.
You can use any soundpack of your choice, or even own *.wav if you rename them for your purposes. Im going for an existing TS3 soundpack here:
To understand the why and where, you should know the structure of an .TS3_soundpack file.
It contains a ~**. ini (which is irrelevant for our use) and~ a folder sounds with a subfolder where the sound files are (**.wav*). For example
Download The Soundpack of your choice
Visit the download folder and extract
folder2of the soundpack with an Archive-Program of your choice to
C:\Program Files\TeamSpeak\html\client_ui\soundand make a backup of the folder
default, so you can undo your changes later on. Just leave this copy in the folder
C:\Program Files\TeamSpeak\html\client_ui\soundas well.
Enter sounds/folder2, select and copy your desired *.wav and insert/ overwrite it into