Images: TiVo's Unbox interface

Amazon.com's Unbox movie and TV-program download service is now fully integrated into TiVo's interface, the companies announced Wednesday. The partnership, which was unveiled last month, allows TiVo customers to purchase Unbox programs, movies and movie rentals directly through the DVR after they've first synchronized their TiVo and Unbox accounts using a PC. The accounts need to be synchronized only once, before the first Unbox download.