Happy Pinging, everyone!
Update: Windows link to supplement the OS X one above. And an x64 link as well. (Thank you to everyone pitching in in the comments!)
Update: See our gallery of installation and setup screenshots.
p.s. Hey, we're on Ping! Come share our awful musical tastes (Erica Sadun, Steven Sande, Victor Agreda, Dave Caolo, etc)! And let us share yours!