[Icecast] Can icecast stream a file from disk?

[H. Wade Minter]

I'm in a situation where I have some MP3 files I'd like to stream on- 
demand, but for various reasons can't just make the MP3 files  
themselves available.

Is there a way, using icecast, to set up a server that would just bind  
to a port, and stream one file as specified in the config file, then  
stop?  So somewhere in the icecast.xml, I'd like to say "File: /tmp/ 
myfile.mp3", and then just have the server start playing that.

--Wade