WinMX MP3 - Version 4.8.1 WinMX MP3 is a powerful and popular file sharing program, allowing you to find and share audio, video, images, books, software and more on the net's coolest peer-to-peer network. An easy-to-use Start wizard helps new users get up and running in less than a minute. Choose the interface that's easiest for you, share your files and you're in! WinMX MP3 offers a large P2P file sharing network and a feature-rich client program.