VLC Media Player version 2.1.1 is a free and open-source multimedia player that supports multiple platforms, including Windows, Mac, and Linux. It supports a wide range of multimedia formats, including MPEG, AVI, MP4, and WMV. The software also includes features such as the ability to play damaged or incomplete media files, a customizable interface, and the ability to stream media over a network. Additionally, VLC Media Player has a built-in equalizer and the ability to convert media files to different formats.