Airplay from itunes to zepplin air will disconnect my computer from my wireless network

Question

Hi there,
Relatively new subject matter, so haven't been able to find much online...
I recently purchased a Zeppelin Air - for those who don't know its an ipod speaker system with airplay built in.  I'm running a Windows Vista x64 machine with the latest version of iTunes.
When I open up iTunes and go to play a song, everything works fine for about 30 seconds and then the audio stops and my computer disconnects from my network.  My network icon in the system tray shows disconnected and of course a new browser window won't open my home page. 
I then tried using a program called Airfoil to stream Spotify to my Zepplin speakers and it works fine.  Go back to itunes to test out (streaming from itunes now, and not the Airfoil program) and it makes it past a minute, but then after a few minutes it starts getting choppy.  I press stop and start another song... a whole song finishes.  Next song about a minute in it disconnects my computer from my home network again.
Next I open up Airfoil and have it hijack itunes rather than using the airplay feature in itunes. I make it a few minutes into one song, decide to skip to another, no problem.  No disconnects.
Back to itunes, no airfoil this time, back to using the airplay feature from itunes.  25 seconds into a song, it gets really choppy, drops audio.  I press stop and try another song... really choppy can't seem to keep a solid connection.  I try a few songs, one makes it through, then I go back to another and my computer loses connection to my network again.
So point being is it appears to be an iTunes issue and not a Zeppelin issue.  In fact this is my second Zeppelin, I returned the first one because it was having the same problems.
The only functional difference I can see is that iTunes seems to be more responsive in the congrols for pause/play/volume where as Airfoil has a slight delay.  I feel that maybe iTunes is pushing too much data out for my wireless adapater to handle?
Also streaming Pandora from an ipad works no problem...
I'm going to be trying a new adapter soon, but curious to see if anyone has any insights.
Thanks,
Travis

Answer 1

I've narrowed down the problem to a combination of my Windows Vista 64 machine and streaming directly from iTunes.
I tested my laptop with XP and had no problems streaming from iTunes.
I then connected my Vista machine directly to the router and when streaming directly from iTunes I had all sorts of skips and pauses, but when streaming from Airplay no problem.
I attached an image of my network stats from the same song via iTunes and Airplay.  The spikes in the network traffic seem to be the problem when streaming from iTunes...