The title of the new Spice Girls Christmas single might fuel speculation about a pending break-up. The song is titled "Goodbye," according to a report in England's "Dot Music," a British music industry trade publication.The Spice Girls only recently recorded the track, their first as a four-piece. The quartet is now said to be writing songs and preparing to record a third album, but no release date has been set as yet. Meanwhile, recently married Scary Spice Mel B will join MTV's Bill Bellamy hosting Britain's annual MOBO Awards, "Music Of Black Origin," set for October 14 at London's Royal Albert Hall. The nominees, announced yesterday, include All Saints, Cleopatra and Jamiroquai. Scary Spice, is also expected to perform, according to "Dot," as are Puff Daddy, D'Angelo and Chaka Khan.