Computer Option –
This year I put together the head unit for 32 channels of audio with used equipment for around $500.
Got an old athon computer and a rack case from craigs list. My main requirment was that it have 4 - PCI slots.
The audio output is with four M-Audio 1010lt cards that can be found for 80-120 on ebay. Each card outputs 8 anolog tracks to your basic RCA jack. (they also have 8 inputs if needed)
Software use to control it is Reaper, an open sorce free or low cost very powerful product.
Basically nothig else running on it. Never failed all season. Each track easily switched out and controllable.
Can be set up for on button mute and switch to mike input for PA (or whole haunt music during build season)
Mid State Scare - San Luis Obispo and Santa Maria's favorite Haunted House
2013 - Hmmm, we shall see what gets conjured up