Seven Japanese labels sent warning letters Nov. 15 to Internet service providers, demanding that they disclose the names of individuals who have allegedly uploaded unauthorized music files to the Inte

TOKYO -- Seven Japanese labels sent warning letters Nov. 15 to Internet service providers, demanding that they disclose the names of individuals who have allegedly uploaded unauthorized music files to the Internet.

A statement from the Recording Industry Assn. of Japan identifies the seven labels as Victor Entertainment, Universal Music, Toshiba-EMI, Warner Music Japan, Avex and Sony Music Entertainment (Japan) divisions Sony Music Records and Defstar. The names of the ISPs involved have not been revealed.

"If the ISPs don't cooperate, we will then consider the possibility of legal action," an RIAJ representative says.