THE BBC's news and sport radio station, which replaces Radio 5 on 28 March, is to be called Radio Five Live. Its controller, Jenny Abramsky, who will give details of her programme plans next week, says that research showed the name 'had an exciting feel . . . the combined excitement and professionalism of our journalism and sports coverage is there'. But doesn't it sound a bit like the fruit juice 'Five Alive'?