Tip: Avoid the default "Winamp Classic" skin. It was made for 1998 monitors and will look incredibly small and jagged on a 4K panel unless you force it to "Double Size," which looks blocky. Stick to "Modern" engine skins for 4K.
A native solves three major issues:
Winamp, the legendary media player, was designed for 800×600 or 1024×768 CRT monitors. On a modern 4K screen (3840×2160), classic skins become microscopic. A “4K skin” means:
Do you have a hidden gem of a 4K skin? Drop the link in the comments below. And if you haven't updated Winamp since 2007, go download WACUP—your ears (and eyes) will thank you.
Don't waste time on generic search results. Go to the source.