Bear Stearns analysts speculated in a research report last month that consumers would soon see something called "Google Cubes" — a small hardware box that could allow users to move songs, videos and other digital files between their computers and TV sets. Larry Page, Google"s co-founder and president of products, will give a keynote address Friday at the Consumer Electronics Show in Las Vegas. Analysts suspect that Page will use the opportunity either to show off a Google computing device or announce a partnership with a big retailer to sell such a machine.