Google Music Labs

If you're looking for more features for Google Music, try the new Labs page. Google informs that "Google Play music labs are a testing ground for experimental features that aren't quite ready for primetime. They may change, break, or disappear at any time."

Right now, there are three experimental features available: desktop notifications for Chrome, HTML5 audio and 5-star ratings. If you enable 5-star ratings, thumbs ups and thumbs downs will be converted to 5 stars and 1 star. HTML5 audio "works in all browsers that support MP3 playback with HTML5 audio: Chrome, Safari 3.1+, and IE 9+" and replaces the hidden Flash player that's currently used.

After enabling desktop notifications, you should see an infobar that asks for permission. Click "allow" and Google Music will show a nice notification enhanced with a cover art thumbnail when a new song starts playing.

{ Thanks, Florian K. }