What Gauge Speaker Wire do I Need?

What gauge speaker wire I need would depend on the use. We can base this, since we have no details, on a simple process based on normal use and not a full blown top of the line home theatre system. Eighty feet or less would use 16 gauge. Eighty feet to two hundred feet would require 14 gauge and over two hundred feet would be 12 gauge. This is the simplest way to answer without details.