How to view thumbnail image in Grid before uploading

I am creating a file upload application. I am using a Grid with a filereferencelist object to list all of the uploaded files. I would like to place a thumbnail image of the file in the grid before it is uploaded. I basically used this example from Coding Cowboys (http://weblog.cahlan.com/2006/12/flex-upload-component.html) but I need to add a column for the thumbnail image.

I seen examples of an image getting loaded into a canvas.
http://mariusht.com/blog/2009/04/01/loading-local-images-directly-into-flash-player-10/
http://techblog.floorplanner.com/2009/05/04/load-modify-and-save-local-images-with-flash-p layer-10/
What if I used this as an Item Render field in the grid?

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