Try this free social network script dolphin v6.1 download free on www.boonex.com. This script combined with ray v3.5 (also free download from same site) offers most advanced social network script.

Dolphin
Smart Community Builder
v6.1. Free.
Match, MySpace, YouTube, Flickr, Odeo and Facebook combined, free Web 2.0 software. Create a unique community, social network, or dating site instantly with the world's most popular open-source community script.

Ray
Community Widget Suite
v3.5. Free.
Add multimedia and communication software to your community site. Flash-based chat, IM, recorder, video player, music player, boards, and so much more - all interactive, advanced and VERY cool.