Be a man about (even at the risk of a marital dispute) and tell her how much those wires she's stepping on cost. Or, you could just raise the wires a few inches off the floor, with either home made supports or any of a number of commercially made cable supports as many dealers and cable makers advise us audiophiliacs to do.
Wife stepping on speaker wire
I'm looking for a heavy duty, thick pair of speaker wire that she can see from a great distance. I have never come across a person that has no regard where she plops down her size 8's. Any suggestions would be a god send.