You wanted scrubbing in XBox Music? Wish granted.

Slowly but surely, good changes are coming. Soon, we might call this a 'good' app - hopefully by the time it hits official release.

Audio scrubbing enabled

Smoother Fast Forward and Rewind animations.

UI fixes to improve visibility of content.

Bug fixed where songs are incorrectly removed from playlists.

Fixes for unexpected app exits.

http://winsupersite.com/windows-phone/xbox-music-windows-phone-81-gets-another-update