Help: Install FFMPEG, Mplayer & Mencoder, Flv2Tool, Libogg, LAME MP3

Greetings,

I am having a hard time finding ANY how-to's for installing the bits to run a video enabled script/site on OSX (Leopard 10.5.6) Server. I am considering moving my sites from a (crap) Linux dedicated server to a Mac Mini colo service.

I am trying to get Skadate and ClipShare running but I'm no Unix guru. Can someone help or point me to some How-To's? I know these things need to be installed individually (and some are there already) but I can't find any info on how to do it on OSX! A comprehensive "step by step" would be fantastic...

Here are the server requirements:

SkaDate - http://www.skadate.com
Server Requirements
* Linux/Unix/Windows OS
* Apache Server 1.3 or higher
* PHP 5.2.4 (server module and system binary) or higher, with cURL support
* MySQL 5.x
* GD Library 2 with FreeType support
* Mail server (SendMail, Exim or other)
* Cron
* FFmpeg
* Mplayer + Mencoder
* Flv2tool
* Libogg + Libvorbis
* LAME MP3 Encoder

ClipShare - http://www.clip-share.com
Server Requirements
* Linux Server (some old distributions are not supported)
* Apache Web Server
* MySQL (version 4 +)
* PHP 4 or 5
* GD Library 2 or higher
* Mplayer + Mencoder
* Flv2tool
* Libogg + Libvorbis
* LAME MP3 Encoder
* Must be able to run PHP from the command line (CLI) with exec()
* Allowed execution of background processes with exec("binary > /dev/null &")


Thanks for any help!

Jefbear