My wife and I had our new home pre-ran with speaker wire, but in the junction box where it all comes together, they did not label the wires. Is there an easy DIY way to tone test the wires to see which goes where?
Continuity tester from your hardware store (or built into your multimeter). Just twist together the pair where it comes out of the wall and then connect the tester between the various pairs at the junction box. The one where it lights up is the one that you twisted. Just be sure to untwist them all as you do them.