Say goodbye to Zune, folks. Microsoft has just announced its brand new Xbox Music service during its big E3 presentation. That brings with a library of more than 30 million tracks, which you'll be able to access across all of your Microsoft devices, including your PC, Windows 8 tablet and Windows Phone in addition to the Xbox 360 itself. Expectedly, that all comes wrapped in a Metro-style interface, but it appears to basically be a Zune rebrand beyond that, with few other surprises to be found (at least for now).