After doing some more searching on the internet, I found this:

Finding difference between images - By Bryan Cook
Using that code to find the differences between the images I sent those differences across (using screenshotBMP.Save(ssMemStream, ImageFormat.Gif), rather than .JPEG), this of course save the transparency in the memory stream as black so on the receiving end you have to make sure (for the image difference that is sent) that you do receiveImage.MakeTransparency(Color.Black) otherwise if you try to overlay the difference onto the previous image you'll just get a black screen.

I managed to reduce the image received from 12Mbps down to 2Mbps, I know there is still a little more to go for slower connections though.

All credit goes to Bryan Cook for the code I just used it in a different context.

How to compare two different images, send the difference via tcp then merge the difference with image on client?
I need to watch a RSS feed from our hudson ci server.
Each time a new entry is available i want to play a sound by calling #&gt;play sound.wav.

Does anyone know a tool which can watch a rss-feed and fire a command each time a new entry appears?

I had a look at rsstail but it gets all entries from the feed and not the latest or only the ones that are new since the last lookup.
