Re: MP3 is good enough for 90% of people.
"use solid core mains cable for speaker wire because it's cheap"
type of wire OBVIOUSLY doesn't alter sound quality, yeah, unless it's corroded. Solid may be less susceptible to this. But corrosion will happen regardless. After all, you're running electricity across a junction of dissimilar metals in an atmosphere with moisture in it. Give it time, and you'll need to clean or replace the wires. until then, enjoy!
and cheap wires save money. and probably last just as long.
and gold plating rubs off and doesn't stop the corrosion. it just looks shiny.
SILVER, on the other hand, tends to oxidize into a material that is reasonably conductive, but it's black and doesn't "look pretty". So, how come nobody is doing THAT for consumer gear? The military uses solid silver connectors in critical applications for this very reason. it's uber-reliable.