Last month’s piece on electronic publishing (Turning Up the Heat: A Media Wildfire) failed to note that Sony announced more than 70 titles at the same time it launched its MMCD player in New York. Titles shown at the event included the Wall Street Journal Guide to North America published by Random House and the Official Airline Guides Travel Disc published by Sony Electronic Publishing. Other publishers working with the MMCD player include Compton’s New Media — by far the most prolific, with titles ranging from Let’s Go Europe to New Dynamics of Winning — to IBM Corp.