Several Windows 8 apps, including Calendar, Mail and People, received updates just yesterday, and today Microsoft's Xbox Music is getting a refresh of its own. The music app's update brings both performance improvements to Windows RT devices and some new functionality. Among the new features is a volume control that sets the app's volume independent of the system's volume. The update also brings the ability to automatically sync your music collection to the cloud and add songs from your collection to other devices running Xbox music. Finally, as you can see in the screen grab above, there's a new playing UI that displays all tracks from an album in addition to the song currently playing. You can check out the update yourself by clicking through to the Windows Store via the source link.