Feather bedding emergency!

I have a three layer luxury mattress topper about three inches thick
(top layer is down, middle layer is memory foam, bottom layer is
feather) and a son who wet the bed last night. The middle foam layer
can be removed from between the layer of feather and the layer of
down, but there is no removable cover from the feather and down
sections. How do I remove the urine and the urine odor, and disinfect
the mattress topper? Can I put the feather and down in a washing
machine and dryer? Flush with water? Vinegar? How to dry it? Please
help ASAP! Thanks!

The exact mattress topper can be viewed here: 

http://www.smartbargains.com/go.sb?s=SE&deptId=3&catId=1400&prodId=3030298258&sp=All+Products%2f%2f%2f%2fUserSearch%3dbed+topper%7c%7c%7c%7c%7c&pagename=prod

Feather duvets/comforters can be washed in the washing machine,  use
the gentle cycle and little soap if you would rather be on the safe
side.  As for the dryer,  it can go in there also,  just be sure to
add a clean tennis ball or two in with the item to ensure that the
feathers remain "fluffy".  I have laundered my Daniadown feather quilt
(on regular cycles) for 15 years and it is still like new.  As for the
urine smell if simple laundering does not remove it,  pet stores have
quite a few items that you can add to your wash cycle to neutralize
urine odor.  I hope this helps.  Good luck!