The Psychedelia Viz Pack is a downloadable family of visualizations created back in 2007 by Tim Cowley and Stephen Coy. It was designed for Windows Media Players 11 and 12 as well as Windows Vista and newer. To see a particular visualization from this family, click on one of the visualization links below.
Note that using it in Windows Media Player 11 requires Windows Vista as using it on Windows XP will either just show a black screen or the Player will just crash.