Answered my own question:
Where I am debating is I currently do not have a Windows computer. I had a Windows netbook that had a hard drive crash and have just been running Ubuntu via usb fob, otherwise I am strictly a Mac guy. I have a 4 year old iMac collecting dust right now that would be perfect for the media room and I would love to get REW installed. Just not sure on the connection from the iMac to the receiver... I will need to research if this is possible, and I have seen folks really struggling getting REW running on a Mac, To the point that I might replace the harddrive on my netbook and try to reinstall Windows 7.
Seems like this omni mic is a great deal with REW, so I would really love to get this working..