Over and above the baseline version of Xbox Music included in the Windows Phone 8.1 Developer Previews, we have a changelog, for the new version 2.5.3929.0, of:
- Audio scrubbing, you can drag the track progress indicator to advance to any point you like
- Reworking of the user interface, with larger album artwork and larger controls
- Swiping up and down (on the artwork) through tracks in an album
- Bug fixes
- Background syncing of content, to save waiting each time after starting the application
This is now a lot more usable. Here's the new version in action on my Nokia Lumia 1020 running the latest Developer Preview of Windows Phone 8.1:
Browsing through albums - tapping a letter takes you to the full alphabetic grid, for quicker navigation; within a track, there's no much bigger artwork and a larger progress bar, which is in turn now draggable, to 'scrub' through a song.
Swiping up within album artwork is a new way to navigate between songs, with the transition shown above (halfway through!); the opening screen of Xbox Music centres on your own audio collection....
... here navigating by artist, though (right) the full Xbox Microsoft music store is always just off to one side.
You can download/update Music from the Store here (ignore that the listing is a bit out of date, the app is the same, I promise).