error creating flash file

i found a flash image gallery
the file pulls images off of a xml file that is stored in the same folder as the swf file

what i would like to do is pull the images off of a remote xml file
ie the file will be stored locally on my machine and the images pulled from
http://getitgotitgiveitaway.com/screensaver/photos.xml

i was told to edit the last line in the actionscript file
which is located here
http://getitgotitgiveitaway.com/screensaver/gallery.as

when i do that, and publish the swf file i get this error

: Line 49: The class or interface 'Fuse' could not be loaded.
var f:Fuse = new Fuse();

Total ActionScript Errors: 1 Reported Errors: 1

this is my first time messing with flash... so i have no idea what i am doing.... could some one help me out?
the as fla and swf file is in this directory along with the images anf xml files
http://getitgotitgiveitaway.com/screensaver/