Hive Player is a Android music player optimized for Xoom tablet. With Hive Player, you can scrollable widget with music collection navigation, multi-Select playlist additions, filter duplicates, Search with playlist additions, notification controls with album artwork and etc.
The app is much better than the stock music player. The powerful home screen widget is the coolest feature. The widget works but only allows browsing to albums and artists on Xoom, but it doesn't support Google music.
Download Hive Player ($1.99) from Market.