I was able to stream just fine using either NetUse (free) or Resco File Explorer to map my network drives.
I currenty have my itunes folder shared and can play any mp3s in media player. I also have a folder shared for my TV programs which are recoreded in mpg format and then automatically reencoded to a smaller .wmv format (
www.snapstream.com) and streamed over wifi to my axim. It plays fullscreen with no problems!