Listening to a meeting via the web

Hello,

Is it possible to let my web users listen to a conversation going on in an Asterisk MeetMe room? I think I need a some kind of softphone that can translate the SIP/RTP stream to a MP3 based stream. Web users can listen to this MP3 stream using a standard flash based audio player.

Is there such a sopftphone that can run embedded on a Linux server?

Jan.