AMP3’s resident social networking site, RipLounge.com, recently hosted a contest via SonicBids to find new music to add to its roster.  With three distinct rooms in which 3-D avatars and mix and mingle, winners from three different genres—Top 40 and Rock, Hip Hop and R&B, and Techno/Electronica—were selected from a slew of entrants. We wanted to take a bit of …