Also

* CSX Corp., the third-largest U.S. railroad, plans to fire 800 to 1,000 management workers in the next six months to reduce expenses and streamline decision making after profit declined.

* Gemstar-TV Guide International Inc. said it would raise the price of its TV Guide magazine to $2.49 an issue and begin distributing it Thursdays instead of Mondays. Time Warner Inc.’s Time publishing unit has agreed to help market the magazine, Gemstar said.

* Sony Music said it planned to introduce CD technology in Germany that prevents users from copying songs to file-sharing sites but allows copies for personal use.