Hi,
I know it's possible to configure andromeda (
http://www.turnstyle.com/andromeda) to list any files one desires.
One thing to note is that this program doesn't actually 'stream' anything itself. It's merely providing access to the files. This means if the files you're providing aren't 'streamable' then the client software will tend to download the files completely before playing (instead of playing as they 'stream').
If you want to stream files that wouldn't normally be 'streamable' , then you'll need to invest in some proper streaming server software.
From the 'free' (as in beer) world,
www.freshmeat.net is probably a good place to start looking. Search keywords such as 'icecast' and 'shoutcast' would be my fist choice.
Commercially, Real Server tends to a popular choice.
Regards,
Luke