For starters, be sure to familiarize yourself with the concepts in the Getting Started guide. To configure Andromeda for Real, simply make a prefs file and set playlistMime to audio/x-pn-realaudio:

A sample andromedaPrefs.php file:

<?php #siteName[tab]  My Andromeda Name #playlistMime[tab]  audio/x-pn-realaudio ?>

A sample andromedaPrefs.asp file:

<% 'siteName[tab]  My Andromeda Name 'playlistMime[tab]  audio/x-pn-realaudio %>

Keep in mind that visitors to your site will need to have the Real client software installed.

You can also configure Andromeda to work with the Helix streaming server. All you have to do is set the protcol pref to rtsp:

A sample andromedaPrefs.php file:

<?php #siteName[tab]  My Andromeda Name #playlistMime[tab]  audio/x-pn-realaudio #protocol[tab]  rtsp ?>

A sample andromedaPrefs.asp file:

<% 'siteName[tab]  My Andromeda Name 'playlistMime[tab]  audio/x-pn-realaudio 'protocol[tab]  rtsp %>

Tip: be sure to configure a Helix mount point to your music folder (or, alternatively, that your Helix content folder is web-accessible).