when "new" means "from the last millenium"

In Springfield, Mo., I occasionally tuned the radio to a station billing itself as Springfield's "New Rock Alternative."

During commercial breaks, the station promo would say something to the effect of: "The station for new rock." The first time I heard this promo, the next song was Red Hot Chili Peppers' "Under the Bridge."
The second time i hear the promo, the playlist brought up No Doubt's "I'm just a girl," followed by Metallica's "Enter Sandman."
I don't even think I was in high school when Enter Sandman was released. Is it possible to file some sort of false advertising suit here?