On Genova Street in downtown Mexico City, illegally copied CDs of music by top U.S. artists sell for 20 pesos, just under $2 a piece, in tiny booths between tables overflowing with batteries, stuffed animals and cheap knockoff sunglasses. That’s about one-tenth the price in nearby stores.

Music is even cheaper a few hundred yards away, inside the Internet cafes surrounding the pedestrian plaza of the Glorieta Insurgentes. At eMilios, about 20 customers a day fill virgin discs with illegally downloaded songs for about $1.60, according to the clerk, Luis Arturo Guerrero, and whether or not they pay legitimate Internet sites for the tunes is not his concern.