Check this site
http://www.desi-radio.com/ , this is only sam2 broadcaster with its phpweb files. If you can integrate the Search n Request thing with vbulletin. It wil be gr8.
You can check the samPHPweb install guide here
http://www.spacialaudio.com/forums/viewtopic.php?t=5751
There is 1 integration for phpbb available, you can check that out.
Awating you reply Zachariah.