SubFire 0.9.8 has been submitted to the Amazon app store, and hopefully should be approved with no issues. This adds the albums query and grid that has been on Chrome's version since 0.9.7, along with improved remote control navigation.
For Chrome and the web, 0.9.8 adds notifications.
For both platforms, it adds persistence of the top-level settings. If you close the app in the Albums view, it will restore it on restart, along with the last query, the music folder, and the ID3 setting.
The next 0.9.9 release will try to improve the grid layout on Chrome and fix a few bugs that show up only on Chrome when the window is > 1440 pixels wide.
Links at http://subfireplayer.net/