Music Manager 18.104.22.16812 - Official Google Music upload tool; store 20,000 songs for free.. (Free): "
Google's Music Manager lets you add songs from your computer to the Google Music service.
The software resides in your Mac's menu bar and in System Preferences.
Version 22.214.171.12412: Release notes were unavailable when this listing was updated.
Mac OS X 10.5 or later.
(Via MacUpdate - Mac OS X.)