We've been following the core media apps—Music and Video—since the Windows 8 Consumer Preview. That development hinted Microsoft wanted to become a viable competitor to Apple and Amazon in the multimedia content realm. We found the first glimpse compelling, a signal that perhaps there was a true stake for Redmond to claim.
Now with Windows 8 live, the Preview groundwork has been built upon. As you'll see here, things have changed, but not always as expected. The evolution of Music and Video begins up front, where the apps have shed their Zune branding. Instead, Microsoft chose to reuse the Xbox brand, as the company moves to expand the scope of the Xbox name from gaming to all media and entertainment.
Source
A Guy
