Getting Started With DMX
From LinuxMCE
To get started with DMX within LinuxMCE, you need an OpenLightingAssociation supported DMX controller, for example the [Entec DMX USB Pro]. Depending on what you want to control, you need for example a DMX RGB LED controller, like DMX RGB LED Dimmer (search on ebay).
Add the needed cables, power supply for the LEDs, and you are ready to go.