Vlc media player (previously the videolan client and commonly known as simply vlc) is a free and open-source, portable, cross-platform media player software and streaming media server … Vlc is a free and open source cross-platform multimedia player and framework that plays most multimedia files as well as dvds, audio cds, vcds, and various streaming protocols. Vlc media player (previously the videolan client) is a free and open-source, portable, cross-platform media player software and streaming media server developed by the videolan project. Vlc is a free and open source cross-platform multimedia player and framework that plays most multimedia files as well as dvds, audio cds, vcds, and various streaming protocols. Vlc is a free and open source cross-platform multimedia player and framework that plays most multimedia files as well as dvds, audio cds, vcds, and various streaming protocols.