Seems to work best at a fairly low frame rate (12-15 fps) and optimized for 1024x768 display. Takes a while for the full extent of the patterns to emerge. If you're into staring a mandalas you probably aren't in much of a hurry anyway.
MilkDrop is a 3d-accelerated viz plugin that uses 3D graphics hardware to create a visual journey through sound unlike any you've seen before. Requires 3D hardware and DirectX 8.0 or later.