I stumbled across this link.
Audio Snake Oil
According to the author, the following qualify as myths:
--Biwiring
--Expensive speaker wire of similar gauge and length, but dissimilar retail cost
--Silver vs. copper speaker wire
--Wire elevators
--Green paint around the edges of a CD
--Freezing CDs
--"Anti-static" CD treatments
--"Demagnetizing" CDs
--Expensive aftermarket power cords
--Expensive power receptacles
--Sand bags placed on, in, and around electronic audio components
--Speaker wire and audio interconnect "break-in"
--Speaker "break-in"