[CentOS] CentOS 5 and webex wrf files?

Anyone have experience playing back a Webex wrf file on their CentOS 5.x system?

I have a newly installed CentOS 5.4 i386 system and want to play such
a file, but the Webex.com web site says it only supports Windows and
MacOS for playback.

Any other options next to creating a VM of Windows (I'm not buying a
Mac for this).

Thanks.

Scott