First, download from here https://skins.webamp.org/
An article I found through search says the following:
- Windows version needs some massaging to use them. Download the skin, then rename the file so the extension is .ZIP instead of .WSZ. Unzip the file and drag the folder to C:UsersUSERNAMEAppDataLocalaudaciousSkins, replacing “USERNAME” with your Windows username. The skin will show up in the Audacious settings, though you may need to restart the application first.
Good luck.





It’s even easier on Linux, unpack each winamp skin you want into its own folder in usr/share/audacious/Skins, start audacious, select winamp classic mode, then choose the skin in the general tab of the appearance setting.
If your user doesn’t have right permission to the Skins folder, don’t forget you can always use sudo, even though it might be better practice to add your user to a group that has right permissions for that directory. I’m a bad Linux user and run my file manager with sudo way too often.