G'day Jeff,
To answer your question, No there isn't a Linux or MAC version available as yet.
I'm now running Kubuntu 6.10 on my new PC and I can run the Conference Room by having a VMServer setup (from
www.VMware.com) - The Server is Free and I'll probably have to knock up a "How To" guide on getting that going.
Don't quote me, but I think there is a version available for MAC's as well.
As far as WINE goes ( an Windows API that runs native on Linux and MAC's ) It's don't go on that too well at all

.
The software itself, has only been around just on 3 years now and they are intending to Port this to Linux and MAC as soon as they can. It's a matter of man power etc...
It's made huge inroads on the internet world and it's no toy!
So to answer your question - Yes it can be run under Linux under Windows (98SE and above - not sure about Vista[no comment] ) running on a VMware server.
Jeff, Running Linux as the Host system and having my Windows2000 and what ever other OS I care to run - run as an Application - is pretty neat.
I just can't desktop share my two monitors anymore

with my PHP Group. It's fun writing my PHP Scripts on the FLY under Linux and display them in the room in Windows ( call me techie junkie) but it's very practical.
So that was the short answer - move aside your set of Encylopedia Brittanica for the longer version (excuse the Speling misteaks - its late!)
I hope to see someone in the room oneday. It appears everyone bails if they know I'm coming

Cheers
Tim