This collection of chiptune players covers various popular home computers and tracker formats: mods: http://www.wothke.ch/webxmp/ (GPL) Amiga: http://www.wothke.ch/webuade/ (CC BY-NC-SA) Atari ST: http://www.wothke.ch/webaudio68/ (GPL) C64: http://www.wothke.ch/websid/ (CC BY-NC-SA) All the players are free for non-commercial use.