The music is played by the (yet unreleased) player/composer kklangzeug by gargaj and tsw of ümlaüt design, while Puryx (probably one of the most experienced kklangzeug musicians now ;) did the nice track at the party. Crinkler is (ofcourse) used for the final compression.

Pixel shader 3.0 capable hardware is required - that is Radeon X1300+ or GeForce 6600++, which is a natural requirement for doing (practical) raytracing on the GPU. However a fast card with good dynamic branching capabilities like the Radeon X1600 or especially X1900 is recommended, while it is pretty slow on the Geforce 6 series.