Finally out of beta, you no longer need an invite to use the free Google Music service. For now, it's available to anyone in the U.S. with a Google account.
Two new features that weren't available in the beta are Google+ sharing and a music store in the Android Market. If you want to try the music service du jour, here's how to get started with Google Music:Using Google Music on your computer
Uploading music: To upload your own music to Google Music, you need to install the Music Manager (Windows XP/Vista/7, Mac … Read more