Entertainment-on-demand firm Intertainer and Barnesandnoble.com are teaming to develop a store offering books and software within Intertainer's audio- and video-enhanced environment. The store will feature content such as video interviews and book reviews as well as the bookseller's full catalog of products, the firms said. Intertainer will be available to consumers via PCs or television sets beginning this month. NBC bought a stake in the firm last week.