Zune, Microsoft Corp.’s end-to-end digital entertainment service and media player, today announced significant advancements for consumers. The new Zune HD touch-screen media player is now available at retail, and a powerful update to the Zune PC software is free for download. For the first time, standard- and high-definition (HD) movies can be purchased or rented through the Zune Marketplace online store, and a new streaming music service on Zune.net lets Zune Pass subscribers listen to music fr