is the freespeech.org group on this list? they announced
to reverse-engineer realaudio software. 
already existing is real2wav of b2 systems
http://www.hitsquad.com/smm/programs/Ra2Wav_PentiumII/

for mp3 audio netcasting there's the open source based
http://www.icecast.org/

and what do you say about MS-Audio ? 
http://www.microsoft.com/windows/windowsmedia/

http://www.gnusic.net 
may be a solution to not bring it only down to the formats
and mp3.com campaigning. 
 
anyone experimenting with quicktime now? 

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