xmms / mpg123 cannot handle Shoutcast URLs? (http://www.shoutcast.com/sbin/shoutcast-playlist.pls?rn=2819&file=filename.pls)

Hi, 

I have read some of the documentation pages you have 
put on the web.  I have tried

mpg123 http://www.shoutcast.com/sbin/shoutcast-playlist.pls?rn=2819&file=filename.pls

and adding the following to my Mozilla helpers:

mime = audio/x-scpls
extension = pls
Action = /usr/bin/xmms

Nonetheless, I am prompted, every time I click on a Shoutcast
website link, to save the <filename>.pls as a file.

I am running Linux on a x86 machine and have XMMS 1.2.7 
installed and the SHoutcast support enabled in its preferences.

My suspicion is that the HTTP redirection is somehow confusing
things.  I wonder if Shoutcast isn't specifying a mime type in
the URL the redirect to.  I checked the Shoutcast page source
and see no mime type specified there (I would expect to see
audio/x-scpls).

On the other hand, could this be a bug in Mozilla?

Thanks for any help you can send,

	Miles